ORKA · Oruka Therapeutics, Inc. · Holdings

$81.05 +3.77 (+4.88%)

Russell 2000 member Rebalance outlook locked

Market Cap

$5.12B

66.21M

Volume · Oct 9 594.12K Avg daily vol (3M) 891.49K

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 →

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.

The Sep 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out. Each fund's Change is measured against its own previous reported quarter, shown in the Reported column. Pick a completed quarter in the Quarter selector below to put every fund on one quarter and see the stock-wide activity breakdown.

Quarter:

Holders: 256

Total Value: $7,087,477,653

Total Shares: 74,471,860

Showing 1–100 of 263 holdings by value · page 1 of 3

Institutional Ownership Trend

27 quarters

Superinvestors Holding ORKA

All superinvestors →

Andreas Halvorsen $143,086,001

Holder Concentration

Across 257 13F filers

Top Holder

12.2%

of institutional value

Top 5

34.0%

of institutional value

Top 10

50.4%

of institutional value

HHI

381

Broadly held

Showing 100 of 263

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

FMR LLC

$862,016,073

12.16%

9,057,645

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

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	7,082,177	$674,010,785	78.2%	Defined
FIDELITY MANAGEMENT TRUST CO	1,786,763	$170,046,234	19.7%	Defined
Fidelity Institutional Asset Management Trust Co	31,100	$2,959,787	0.3%	Defined
FIAM LLC	157,605	$14,999,267	1.7%	Defined

BlackRock, Inc.

$474,915,519

6.70%

4,990,181

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	101,265	$9,637,390	2.0%	Sole
BlackRock Investment Management (Australia) Ltd	113	$10,754	0.0%	Sole
BlackRock Asset Management Canada Ltd	7,881	$750,034	0.2%	Sole
BlackRock Investment Management, LLC	156,520	$14,896,008	3.1%	Sole
BLACKROCK ADVISORS LLC	518,924	$49,385,997	10.4%	Sole
BlackRock Fund Advisors	2,287,171	$217,670,064	45.8%	Sole
BlackRock Institutional Trust Company, N.A.	1,525,607	$145,192,018	30.6%	Sole
BlackRock Japan Co. Ltd	587	$55,864	0.0%	Sole
BlackRock Fund Managers Ltd.	5,464	$520,008	0.1%	Sole
BlackRock Investment Management (UK) Ltd.	33,589	$3,196,665	0.7%	Sole
BlackRock Asset Management Ireland Ltd	79,916	$7,605,605	1.6%	Sole
BlackRock (Luxembourg) S.A.	240,776	$22,914,651	4.8%	Sole
BlackRock Asset Management Schweiz AG	5,245	$499,166	0.1%	Sole
Aperio Group, LLC	27,123	$2,581,295	0.5%	Sole

Venrock Adviser, LLC

$394,805,892

5.57%

4,148,428

Fairmount Funds Management LLC

$352,629,784

4.98%

3,705,262

Capital World Investors

$323,733,983

4.57%

3,401,639

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

Manager	Shares	Value (USD)	% of position	Discretion
CAPITAL GROUP COMPANIES INC joint	3,401,639	$323,733,983	100.0%	Defined

RTW INVESTMENTS, LP

$298,741,485

4.22%

3,139,030

STATE STREET CORP

$254,397,975

3.59%

2,673,090

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	2,673,090	$254,397,975	100.0%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$224,693,610

3.17%

2,360,971

Paradigm Biocapital Advisors LP

$204,094,539

2.88%

2,144,526

Deep Track Capital, LP

$183,297,420

2.59%

1,926,000

Bellevue Group AG

$157,714,772

2.23%

1,657,190

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

Manager	Shares	Value (USD)	% of position	Discretion
BB Biotech AG joint	1,657,190	$157,714,772	100.0%	Defined

FRANKLIN RESOURCES INC

$154,313,491

2.18%

1,621,451

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

Manager	Shares	Value (USD)	% of position	Discretion
FRANKLIN ADVISERS INC	1,134,407	$107,961,514	70.0%	Defined
PUTNAM INVESTMENT MANAGEMENT LLC	292,444	$27,831,895	18.0%	Defined
PUTNAM ADVISORY CO LLC	194,600	$18,520,082	12.0%	Defined

Remedium Capital Partners, LLC

$149,003,957

2.10%

1,565,661

RA CAPITAL MANAGEMENT, L.P.

$147,950,996

2.09%

1,554,597

VIKING GLOBAL INVESTORS LP

$143,086,001

2.02%

1,503,478

GEODE CAPITAL MANAGEMENT, LLC

$136,088,721

1.92%

1,429,954

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	186,178	$17,718,560	13.0%	Defined
Held directly	1,243,776	$118,370,161	87.0%	Defined

Jupiter Topco LLC

$130,939,072

1.85%

1,375,844

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

Manager	Shares	Value (USD)	% of position	Discretion
JANUS HENDERSON INVESTORS UK Ltd	16,497	$1,570,019	1.2%	Defined
JANUS HENDERSON INVESTORS US LLC	1,359,347	$129,369,053	98.8%	Defined

PERCEPTIVE ADVISORS LLC

$128,009,645

1.81%

1,345,063

Polar Capital Holdings Plc

$116,926,718

1.65%

1,228,609

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

Manager	Shares	Value (USD)	% of position	Discretion
Polar Capital LLP	1,228,609	$116,926,718	100.0%	Defined

CITADEL ADVISORS LLC

$106,496,276

1.50%

1,119,011

T. Rowe Price Investment Management, Inc.

$105,043,221

1.48%

1,103,743

BNP PARIBAS ARBITRAGE, SA

$102,689,857

1.45%

1,079,015

PRICE T ROWE ASSOCIATES INC /MD/

$79,809,846

1.13%

838,603

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	74,333	$7,074,271	8.9%	Defined
Held directly	764,270	$72,735,575	91.1%	Sole

Avidity Partners Management LP

$72,369,552

1.02%

760,424

SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC

$62,650,506

0.88%

658,301

JPMORGAN CHASE & CO

$62,338,917

0.88%

655,027

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

Manager	Shares	Value (USD)	% of position	Discretion
J.P. Morgan Trust Co of Delaware	212	$20,175	0.0%	Other
JPMorgan Chase Bank, N.A.	34,688	$3,301,256	5.3%	Defined
J.P. Morgan Investment Management Inc.	483,324	$45,997,945	73.8%	Defined
J.P. Morgan Securities plc	4,479	$426,266	0.7%	Defined
JPMorgan Asset Management (UK) Ltd	132,324	$12,593,275	20.2%	Defined

Aberdeen Group plc

$61,569,565

0.87%

646,943

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

Manager	Shares	Value (USD)	% of position	Discretion
abrdn Inc.	646,943	$61,569,565	100.0%	Defined

UBS Group AG

$60,848,175

0.86%

639,363

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	5,132	$488,412	0.8%	Defined
UBS AG	611,204	$58,168,284	95.6%	Defined
UBS Switzerland AG	23,027	$2,191,479	3.6%	Defined

WESTFIELD CAPITAL MANAGEMENT CO LP

$60,093,478

0.85%

631,433

Pictet Asset Management Holding SA

$58,917,462

0.83%

619,076

Affinity Asset Advisors, LLC

$56,150,300

0.79%

590,000

VANGUARD PORTFOLIO MANAGEMENT LLC

$55,427,864

0.78%

582,409

Cormorant Asset Management, LP

$50,757,967

0.72%

533,340

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

Manager	Shares	Value (USD)	% of position	Discretion
Chen Bihua	533,340	$50,757,967	100.0%	Defined

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$41,247,153

0.58%

433,405

NORTHERN TRUST CORP

$40,817,553

0.58%

428,891

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	404,821	$38,526,813	94.4%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	16,255	$1,546,987	3.8%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	7,815	$743,753	1.8%	Other

VOYA INVESTMENT MANAGEMENT LLC

$38,177,349

0.54%

401,149

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	401,149	$38,177,349	100.0%	Defined

LORD, ABBETT & CO. LLC

$37,122,390

0.52%

390,064

VANGUARD FIDUCIARY TRUST CO

$34,797,007

0.49%

365,630

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

$34,651,587

0.49%

364,102

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

Manager	Shares	Value (USD)	% of position	Discretion
MFS Heritage Trust CO	3,007	$286,176	0.8%	Defined
Held directly	361,095	$34,365,411	99.2%	Sole

Synergy Asset Management, LLC

$33,909,166

0.48%

356,301

ADAGE CAPITAL PARTNERS GP, L.L.C.

$33,785,635

0.48%

355,003

BANK OF AMERICA CORP /DE/

$33,578,259

0.47%

352,824

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	325,640	$30,991,158	92.3%	Defined
BOFA SECURITIES, INC.	27,184	$2,587,101	7.7%	Defined

SILVERARC CAPITAL MANAGEMENT, LLC

$33,576,166

0.47%

352,802

Candriam S.C.A.

$33,567,981

0.47%

352,716

Holocene Advisors, LP

$29,117,356

0.41%

305,951

JENNISON ASSOCIATES LLC

$28,480,288

0.40%

299,257

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

Manager	Shares	Value (USD)	% of position	Discretion
Prudential Financial Inc	299,257	$28,480,288	100.0%	Defined

Woodline Partners LP

$27,146,956

0.38%

285,247

BRAIDWELL LP

$26,472,867

0.37%

278,164

Siren, L.L.C.

$23,792,500

0.34%

250,000

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

Manager	Shares	Value (USD)	% of position	Discretion
Invus Group, LLC	250,000	$23,792,500	100.0%	Defined

Nuveen, LLC

$23,722,738

0.33%

249,267

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	46,980	$4,471,086	18.8%	Defined
TIAA CREF INVESTMENT MANAGEMENT LLC joint	96,464	$9,180,478	38.7%	Defined
TEACHERS ADVISORS, LLC joint	105,823	$10,071,174	42.5%	Defined

EVENTIDE ASSET MANAGEMENT, LLC

$22,840,800

0.32%

240,000

Blackstone Inc.

$22,565,568

0.32%

237,108

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

Manager	Shares	Value (USD)	% of position	Discretion
Blackstone Alternative Asset Management L.P.	237,108	$22,565,568	100.0%	Other

NOMURA ASSET MANAGEMENT INTERNATIONAL INC.

$20,845,941

0.29%

219,039

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	219,039	$20,845,941	100.0%	Defined

SEB Asset Management AB

$18,724,983

0.26%

196,753

DEUTSCHE BANK AG\

$18,577,564

0.26%

195,204

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

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investment GmbH	117,750	$11,206,267	60.3%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC	25,448	$2,421,886	13.0%	Defined
DWS Investments UK Ltd	52,006	$4,949,411	26.6%	Defined

GREAT POINT PARTNERS LLC

$17,447,516

0.25%

183,330

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

Manager	Shares	Value (USD)	% of position	Discretion
JAY JEFFREY R joint	183,330	$17,447,516	100.0%	Defined

GOLDMAN SACHS GROUP INC

$17,077,208

0.24%

179,439

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	127,722	$12,155,302	71.2%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	51,717	$4,921,906	28.8%	Defined

Sio Capital Management, LLC

$16,856,320

0.24%

177,118

Handelsbanken Fonder AB

$15,312,853

0.22%

160,900

PFM Health Sciences, LP

$15,115,375

0.21%

158,825

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$15,074,928

0.21%

158,400

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	158,400	$15,074,928	100.0%	Other

First Turn Management, LLC

$14,783,993

0.21%

155,343

ExodusPoint Capital Management, LP

$14,105,336

0.20%

148,212

Bank of New York Mellon Corp

$13,406,596

0.19%

140,870

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

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation joint	46,796	$4,453,575	33.2%	Defined
The Bank of New York Mellon	91,336	$8,692,447	64.8%	Defined
BNY Mellon, NA	376	$35,783	0.3%	Defined
BNY Mellon Advisors, Inc. joint	2,361	$224,696	1.7%	Other
Held directly	1	$95	0.0%	Defined

Invesco Ltd.

$11,863,699

0.17%

124,658

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	7,647	$727,763	6.1%	Defined
Invesco Trust Co joint	19,995	$1,902,924	16.0%	Defined
Invesco Capital Management LLC	97,016	$9,233,012	77.8%	Defined

VICTORY CAPITAL MANAGEMENT INC

$11,827,537

0.17%

124,278

WELLINGTON MANAGEMENT GROUP LLP

$11,382,425

0.16%

119,601

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	40,831	$3,885,886	34.1%	Defined
Wellington Managment Canada LLC	486	$46,252	0.4%	Defined
Wellington Trust Company, NA joint	71,227	$6,778,673	59.6%	Defined
Wellington Management Australia Pty Ltd	5,945	$565,785	5.0%	Defined
Wellington Management Europe GmbH	1,112	$105,829	0.9%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$11,115,856

0.16%

116,800

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	116,800	$11,115,856	100.0%	Other

STEMPOINT CAPITAL LP

$11,083,593

0.16%

116,461

Parkman Healthcare Partners LLC

$10,772,101

0.15%

113,188

DIMENSIONAL FUND ADVISORS LP

$10,770,959

0.15%

113,176

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

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Ireland Ltd	1,866	$177,587	1.6%	Defined
Held directly	111,310	$10,593,372	98.4%	Sole

Russell Investments Group, Ltd.

$10,748,783

0.15%

112,943

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	68,138	$6,484,693	60.3%	Defined
Russell Investments Capital, LLC	23,639	$2,249,723	20.9%	Defined
Russell Investments France SAS	7,492	$713,013	6.6%	Defined
Russell Investments Trust Company	13,674	$1,301,354	12.1%	Defined

Apis Capital Advisors, LLC

$10,659,040

0.15%

112,000

SEVEN GRAND MANAGERS, LLC

$10,468,700

0.15%

110,000

KENNEDY CAPITAL MANAGEMENT LLC

$10,170,151

0.14%

106,863

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

$9,927,181

0.14%

104,310

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	2,702	$257,149	2.6%	Defined
UBS Asset Management Switzerland AG	94,847	$9,026,588	90.9%	Defined
Held directly	6,761	$643,444	6.5%	Defined

TD Asset Management Inc

$9,797,180

0.14%

102,944

Moody Aldrich Partners LLC

$9,651,284

0.14%

101,411

Atika Capital Management LLC

$9,516,998

0.13%

100,000

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

Manager	Shares	Value (USD)	% of position	Discretion
Atika Capital Partners LP	58,293	$5,547,744	58.3%	Defined
Optika Master Portfolio Ltd	24,843	$2,364,308	24.8%	Other
Held directly	16,864	$1,604,946	16.9%	Sole

TORONTO DOMINION BANK

$8,549,787

0.12%

89,837

Alyeska Investment Group, L.P.

$8,350,596

0.12%

87,744

PRUDENTIAL FINANCIAL INC

$8,174,627

0.12%

85,895

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

Manager	Shares	Value (USD)	% of position	Discretion
PGIM Quantitative Solutions LLC	68,895	$6,556,737	80.2%	Defined
Prudential Trust Co	17,000	$1,617,890	19.8%	Defined

Rhenman & Partners Asset Management AB

$7,613,600

0.11%

80,000

MORGAN STANLEY

$7,267,178

0.10%

76,360

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	643	$61,194	0.8%	Defined
MORGAN STANLEY & CO. LLC	30,237	$2,877,655	39.6%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	25,588	$2,435,209	33.5%	Defined
MORGAN STANLEY SMITH BARNEY LLC	5,082	$483,653	6.7%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	14,810	$1,409,467	19.4%	Defined

B Group, Inc.

$7,137,750

0.10%

75,000

BARCLAYS PLC

$7,115,098

0.10%

74,762

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	72,339	$6,884,502	96.8%	Defined
BARCLAYS CAPITAL INC.	2,423	$230,596	3.2%	Defined

AMERIPRISE FINANCIAL INC

$6,922,094

0.10%

72,734

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

Manager	Shares	Value (USD)	% of position	Discretion
Columbia Management Investment Advisers, LLC	72,334	$6,884,026	99.5%	Defined
Ameriprise Financial Services, LLC	400	$38,068	0.5%	Defined

MANUFACTURERS LIFE INSURANCE COMPANY, THE

$6,511,626

0.09%

68,421

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

Manager	Shares	Value (USD)	% of position	Discretion
MANULIFE FINANCIAL CORP joint	68,421	$6,511,626	100.0%	Defined

Fisher Asset Management, LLC

$6,459,568

0.09%

67,874

Ensign Peak Advisors, Inc

$6,439,963

0.09%

67,668

CITIGROUP INC

$6,386,001

0.09%

67,101

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	67,101	$6,386,001	100.0%	Defined

ALLIANCEBERNSTEIN L.P.

$6,288,833

0.09%

66,080

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

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	66,080	$6,288,833	100.0%	Defined

Secure Asset Management, LLC

$6,271,607

0.09%

65,899

Swiss National Bank

$5,995,710

0.08%

63,000

ALPS ADVISORS INC

$5,806,702

0.08%

61,014

RHUMBLINE ADVISERS

$5,784,813

0.08%

60,784

Informed Momentum Co LLC

$5,616,362

0.08%

59,014

Atle Fund Management AB

$5,223,500

0.07%

54,886

WELLS FARGO & COMPANY/MN

$4,941,605

0.07%

51,924

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	45,483	$4,328,617	87.6%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	2,058	$195,859	4.0%	Defined
WELLS FARGO CLEARING SERVICES, LLC	3,883	$369,545	7.5%	Defined
Wells Fargo Securities, LLC	468	$44,539	0.9%	Defined
WELLS FARGO INVESTMENT INSTITUTE, INC.	32	$3,045	0.1%	Defined

Granahan Investment Management, LLC

$4,857,286

0.07%

51,038

Key facts CIK 907654 CUSIP 687604108 13F (30d) 7 filings 7 filers Visit website Investor relations