SIBN · SI-BONE, Inc.

$18.50 -0.14 (-0.75%) At close · Sep 4

Russell 2000 member Rebalance outlook locked

Market Cap

$835.42M

44.82M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 170

Total Value: $780,886,298

Total Shares: 47,848,472

Showing 1–100 of 172 holdings by value · page 1 of 2

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 170 13F filers · Δ vs Mar 31, 2026

Top Holder

17.0%

+4.8 pts

Top 5

41.3%

+6.3 pts

Top 10

57.3%

+5.4 pts

HHI

547

Broadly held+144

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -10

Institutional value: +41.1%

Shares held: +9.2%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mid First Light Asset Management, LLC	+2,774,795	8,127,985
Mid CADIAN CAPITAL MANAGEMENT, LP	+1,460,102	3,347,574
Large MARSHALL WACE, LLP	+522,160	690,288
Small HighMark Wealth Management LLC	+265,217	425,049
Mega BlackRock, Inc.	+247,718	3,676,259

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega MORGAN STANLEY	−581,597	130,913
Large RENAISSANCE TECHNOLOGIES LLC	−428,519	44,100
Mega Nuveen, LLC	−259,475	1,026,036
Small Pier Capital, LLC	−213,024	263,781
Mega CITADEL ADVISORS LLC	−193,026	34,500

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Large Balyasny Asset Management L.P.	100,364	$1,637,939
Mega JANE STREET GROUP, LLC	64,793	$1,057,421
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31,515	$514,324
Mid Magnetar Financial LLC	27,740	$452,716
Mid ALLSTATE CORP	27,526	$449,224

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mega Qube Research & Technologies Ltd	371,526	$4,692,373
Mid ALGERT GLOBAL LLC	230,412	$2,910,103
Large Assenagon Asset Management S.A.	224,004	$2,829,170
Large LAZARD ASSET MANAGEMENT LLC	102,499	$1,294,562
Large Man Group plc	82,811	$1,045,902

Filter: New 22 Increased 82 Reduced 48 Sold out 32 Unchanged 18

Showing 100 of 172

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

First Light Asset Management, LLC

$132,648,715

16.99%

8,127,985

BlackRock, Inc.

$59,996,542

7.68%

3,676,259

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	41,033	$669,658	1.1%	Sole
BlackRock Investment Management (Australia) Ltd	101	$1,648	0.0%	Sole
BlackRock Asset Management Canada Ltd	304	$4,961	0.0%	Sole
BlackRock Investment Management, LLC	130,200	$2,124,864	3.5%	Sole
BLACKROCK ADVISORS LLC	98,910	$1,614,211	2.7%	Sole
BlackRock Fund Advisors	1,991,954	$32,508,689	54.2%	Sole
BlackRock Institutional Trust Company, N.A.	1,278,577	$20,866,376	34.8%	Sole
BlackRock Fund Managers Ltd.	7,474	$121,975	0.2%	Sole
BlackRock Asset Management Ireland Ltd	89,237	$1,456,347	2.4%	Sole
BlackRock Asset Management Schweiz AG	7,207	$117,618	0.2%	Sole
Aperio Group, LLC	31,262	$510,195	0.9%	Sole

CADIAN CAPITAL MANAGEMENT, LP

$54,632,407

7.00%

3,347,574

AMERICAN CENTURY COMPANIES INC

$40,978,916

5.25%

2,510,963

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	2,510,963	$40,978,916	100.0%	Defined

BROWN ADVISORY INC

$33,898,826

4.34%

2,077,134

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Brown Advisory LLC	1,978,884	$32,295,386	95.3%	Defined
NEW YORK LIFE INVESTMENT MANAGEMENT LLC	98,250	$1,603,440	4.7%	Defined

Granahan Investment Management, LLC

$31,516,890

4.04%

1,931,182

VANGUARD CAPITAL MANAGEMENT LLC

$30,004,303

3.84%

1,838,499

Impax Asset Management Group plc

$23,256,163

2.98%

1,425,010

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
IMPAX ASSET MANAGEMENT LLC	1,425,010	$23,256,163	100.0%	Defined

GILDER GAGNON HOWE & CO LLC

$20,449,645

2.62%

1,253,042

PARADIGM CAPITAL MANAGEMENT INC/NY

$20,125,824

2.58%

1,233,200

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Paradigm Funds Advisor LLC	1,233,200	$20,125,824	100.0%	Defined

STATE STREET CORP

$19,817,147

2.54%

1,214,286

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	1,214,286	$19,817,147	100.0%	Defined

SILVERCREST ASSET MANAGEMENT GROUP LLC

$18,907,960

2.42%

1,158,576

GEODE CAPITAL MANAGEMENT, LLC

$17,574,011

2.25%

1,076,839

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	151,411	$2,471,027	14.1%	Defined
Held directly	925,428	$15,102,984	85.9%	Defined

Nuveen, LLC

$16,744,906

2.14%

1,026,036

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	364,180	$5,943,417	35.5%	Defined
TIAA CREF INVESTMENT MANAGEMENT LLC joint	578,354	$9,438,737	56.4%	Defined
TEACHERS ADVISORS, LLC joint	83,502	$1,362,752	8.1%	Defined

Champlain Investment Partners, LLC

$14,630,259

1.87%

896,462

Point72 Asset Management, L.P.

$12,898,071

1.65%

790,323

First Eagle Investment Management, LLC

$12,549,117

1.61%

768,941

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FIRST EAGLE SEPARATE ACCOUNT MANAGEMENT, LLC	244	$3,982	0.0%	Sole
Held directly	768,697	$12,545,135	100.0%	Sole

WELLINGTON MANAGEMENT GROUP LLP

$12,123,425

1.55%

742,857

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	353,763	$5,773,412	47.6%	Defined
Wellington Managment Canada LLC	19,511	$318,419	2.6%	Defined
Wellington Management International Ltd	46,972	$766,583	6.3%	Defined
Wellington Trust Company, NA joint	277,970	$4,536,470	37.4%	Defined
Wellington Management Europe GmbH	44,641	$728,541	6.0%	Defined

DIMENSIONAL FUND ADVISORS LP

$11,559,764

1.48%

708,319

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	5,614	$91,620	0.8%	Defined
DFA Australia Ltd.	16,456	$268,561	2.3%	Defined
Dimensional Ireland Ltd	36,147	$589,919	5.1%	Defined
Held directly	650,102	$10,609,664	91.8%	Sole

MARSHALL WACE, LLP

$11,265,497

1.44%

690,288

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	688,810	$11,241,377	99.8%	Other
Marshall Wace Middle East Ltd	1,478	$24,120	0.2%	Other

NEXT CENTURY GROWTH INVESTORS LLC

$9,551,916

1.22%

585,289

VANGUARD PORTFOLIO MANAGEMENT LLC

$8,948,043

1.15%

548,287

GOLDMAN SACHS GROUP INC

$7,212,003

0.92%

441,912

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	31,991	$522,093	7.2%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	409,921	$6,689,910	92.8%	Defined

NORTHERN TRUST CORP

$7,167,106

0.92%

439,161

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	403,705	$6,588,465	91.9%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	28,531	$465,625	6.5%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	6,925	$113,016	1.6%	Other

HighMark Wealth Management LLC

$6,936,799

0.89%

425,049

BANK OF AMERICA CORP /DE/

$6,879,336

0.88%

421,528

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BANK OF AMERICA NA	301,968	$4,928,117	71.6%	Defined
MANAGED ACCOUNT ADVISORS LLC joint	119,560	$1,951,219	28.4%	Defined

PEREGRINE CAPITAL MANAGEMENT LLC

$6,648,164

0.85%

407,363

ROYCE & ASSOCIATES LP

$6,447,836

0.83%

395,088

MILLENNIUM MANAGEMENT LLC

$5,945,147

0.76%

364,286

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$5,594,234

0.72%

342,784

Parkman Healthcare Partners LLC

$5,364,155

0.69%

328,686

TOCQUEVILLE ASSET MANAGEMENT L.P.

$4,961,280

0.64%

304,000

VANGUARD FIDUCIARY TRUST CO

$4,714,472

0.60%

288,877

SEI INVESTMENTS CO

$4,483,870

0.57%

274,747

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	136	$2,219	0.0%	Sole
SEI TRUST CO	274,611	$4,481,651	100.0%	Sole

ESSEX INVESTMENT MANAGEMENT CO LLC

$4,429,313

0.57%

271,404

HARBOR CAPITAL ADVISORS, INC.

$4,398,321

0.56%

269,505

Pier Capital, LLC

$4,304,905

0.55%

263,781

AQR CAPITAL MANAGEMENT LLC

$4,142,796

0.53%

253,848

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RF&L WEALTH MANAGEMENT, LLC	18	$293	0.0%	Other
Prism Planning Partners LLC	304	$4,961	0.1%	Other
Compound Planning, Inc.	19	$310	0.0%	Other
Arax Advisory Partners	5,280	$86,169	2.1%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	674	$10,999	0.3%	Other
Stokes Family Office, LLC	361	$5,891	0.1%	Other
Held directly	247,192	$4,034,173	97.4%	Defined

VELA Investment Management, LLC

$3,281,854

0.42%

201,094

Caption Management, LLC

$3,100,800

0.40%

190,000

D. E. Shaw & Co., Inc.

$3,033,365

0.39%

185,868

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
D. E. SHAW & CO, L.P.	185,868	$3,033,365	100.0%	Defined

VICTORY CAPITAL MANAGEMENT INC

$2,369,174

0.30%

145,170

Bullseye Asset Management LLC

$2,358,435

0.30%

144,512

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.

$2,172,861

0.28%

133,141

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NOMURA HOLDINGS INC joint	133,141	$2,172,861	100.0%	Defined

UBS Group AG

$2,150,633

0.28%

131,779

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	2,772	$45,239	2.1%	Defined
UBS AG	129,007	$2,105,394	97.9%	Defined

TUDOR INVESTMENT CORP ET AL

$2,144,676

0.27%

131,414

MORGAN STANLEY

$2,136,497

0.27%

130,913

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	18	$293	0.0%	Defined
MORGAN STANLEY & CO. LLC	12,208	$199,234	9.3%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	45,561	$743,555	34.8%	Defined
MORGAN STANLEY SMITH BARNEY LLC	63,822	$1,041,575	48.8%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	9,304	$151,840	7.1%	Defined

Cinctive Capital Management LP

$2,015,797

0.26%

123,517

Russell Investments Group, Ltd.

$1,986,402

0.25%

121,716

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	10,954	$178,768	9.0%	Defined
Russell Investments Capital, LLC	66,840	$1,090,828	54.9%	Defined
Russell Investments France SAS	23,729	$387,257	19.5%	Defined
Russell Investments Trust Company	20,193	$329,549	16.6%	Defined

Bank of New York Mellon Corp

$1,967,684

0.25%

120,569

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	38,048	$620,943	31.6%	Defined
The Bank of New York Mellon	79,442	$1,296,493	65.9%	Defined
BNY Mellon, NA joint	3,078	$50,232	2.6%	Defined
Held directly	1	$16	0.0%	Defined

Squarepoint Ops LLC

$1,927,848

0.25%

118,128

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	118,128	$1,927,848	100.0%	Defined

Balyasny Asset Management L.P.

$1,637,939

0.21%

100,364

Stonepine Capital Management, LLC

$1,632,000

0.21%

100,000

NANO CAP NEW MILLENNIUM GROWTH FUND L P

$1,632,000

0.21%

100,000

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AZG TANGIBLE ASSETS FUND LLC	100,000	$1,632,000	100.0%	Sole

Caption Management, LLC

$1,632,000

0.21%

100,000

JPMORGAN CHASE & CO

$1,562,328

0.20%

95,731

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	24,741	$403,772	25.8%	Defined
J.P. Morgan Investment Management Inc.	70,376	$1,148,536	73.5%	Defined
J.P. Morgan Securities plc	614	$10,020	0.6%	Defined

Legato Capital Management LLC

$1,491,011

0.19%

91,361

CITIGROUP INC

$1,473,760

0.19%

90,304

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	90,304	$1,473,760	100.0%	Defined

Swiss National Bank

$1,374,144

0.18%

84,200

PRINCIPAL FINANCIAL GROUP INC

$1,249,197

0.16%

76,544

Caption Management, LLC

$1,224,000

0.16%

75,000

Trexquant Investment LP

$1,154,868

0.15%

70,764

PRICE T ROWE ASSOCIATES INC /MD/

$1,081,281

0.14%

66,255

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
T. Rowe Price International Ltd	66,255	$1,081,281	100.0%	Defined

JANE STREET GROUP, LLC

$1,057,421

0.14%

64,793

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	18,651	$304,384	28.8%	Defined
Jane Street Global Trading, LLC	46,142	$753,037	71.2%	Defined

Palumbo Wealth Management LLC

$1,030,869

0.13%

63,166

Invesco Ltd.

$1,015,689

0.13%

62,236

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Invesco Advisers, Inc. joint	7,056	$115,152	11.3%	Defined
Invesco Trust Co joint	17,380	$283,641	27.9%	Defined
Invesco Capital Management LLC	37,800	$616,896	60.7%	Defined

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$974,890

0.12%

59,736

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	930	$15,177	1.6%	Defined
UBS Asset Management Switzerland AG	58,806	$959,713	98.4%	Defined

RHUMBLINE ADVISERS

$879,223

0.11%

53,874

Quantinno Capital Management LP

$875,486

0.11%

53,645

Universal- Beteiligungs- und Servicegesellschaft mbH

$866,167

0.11%

53,074

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Universal-Investment-Gesellschaft mbH	53,074	$866,167	100.0%	Defined

ADAR1 Capital Management, LLC

$734,400

0.09%

45,000

DEUTSCHE BANK AG\

$733,502

0.09%

44,945

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	854	$13,937	1.9%	Defined
DWS Investments UK Ltd	44,091	$719,565	98.1%	Defined

Sterling Capital Management LLC

$732,686

0.09%

44,895

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

$726,941

0.09%

44,543

RENAISSANCE TECHNOLOGIES LLC

$719,712

0.09%

44,100

Corient Private Wealth LLC

$717,198

0.09%

43,946

MERCER GLOBAL ADVISORS INC /ADV

$686,549

0.09%

42,068

WELLS FARGO & COMPANY/MN

$664,860

0.09%

40,739

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	40,120	$654,758	98.5%	Defined
WELLS FARGO CLEARING SERVICES, LLC	619	$10,102	1.5%	Defined

XTX Topco Ltd

$654,954

0.08%

40,132

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	40,132	$654,954	100.0%	Defined

Hilton Head Capital Partners, LLC

$620,470

0.08%

38,019

D.A. DAVIDSON & CO.

$600,184

0.08%

36,776

ALLIANCEBERNSTEIN L.P.

$593,232

0.08%

36,350

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	36,350	$593,232	100.0%	Defined

CITADEL ADVISORS LLC

$563,040

0.07%

34,500

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	34,500	$563,040	100.0%	Defined

FRANKLIN RESOURCES INC

$557,963

0.07%

34,189

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FIDUCIARY TRUST INTERNATIONAL LLC	87	$1,419	0.3%	Defined
FRANKLIN ADVISERS INC	34,102	$556,544	99.7%	Defined

Perpetual Ltd

$553,019

0.07%

33,886

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
J O HAMBRO CAPITAL MANAGEMENT LTD	33,886	$553,019	100.0%	Defined

VOYA INVESTMENT MANAGEMENT LLC

$536,128

0.07%

32,851

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Voya Investment Management Co. LLC joint	32,851	$536,128	100.0%	Defined

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$514,324

0.07%

31,515

OP Asset Management Ltd

$505,626

0.06%

30,982

Penn Capital Management Company, LLC

$494,332

0.06%

30,290

Engineers Gate Manager LP

$479,481

0.06%

29,380

Magnetar Financial LLC

$452,716

0.06%

27,740

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Magnetar Asset Management LLC	16,151	$263,584	58.2%	Sole
Held directly	11,589	$189,132	41.8%	Sole

Diversified Trust Co

$450,595

0.06%

27,610

ALLSTATE CORP

$449,224

0.06%

27,526

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ALLSTATE INVESTMENTS LLC	27,526	$449,224	100.0%	Sole

MetLife Investment Management, LLC

$421,284

0.05%

25,814

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	25,814	$421,284	100.0%	Defined

VANGUARD ASSET MANAGEMENT, Ltd

$418,608

0.05%

25,650

ACADIAN ASSET MANAGEMENT LLC

$402,418

0.05%

24,658

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	24,658	$402,418	100.0%	Defined

Legal & General Group Plc

$396,183

0.05%

24,276

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	4,277	$69,800	17.6%	Defined
Legal & General Investment Management Ltd joint	19,999	$326,383	82.4%	Defined

HRT FINANCIAL LP

$368,472

0.05%

22,578

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$330,528

0.04%

20,253

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	20,253	$330,528	100.0%	Defined

EntryPoint Capital, LLC

$330,267

0.04%

20,237

Key facts CIK 1459839 CUSIP 825704109 13F (30d) 143 filings 141 filers Visit website Investor relations