TDUP · ThredUp Inc.

$2.72 +0.05 (+1.87%) At close · Sep 4

Russell 2000 member Rebalance outlook locked

Market Cap

$350.66M

131.33M

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: 182

Total Value: $740,333,046

Total Shares: 108,077,832

Showing 1–100 of 186 holdings by value · page 1 of 2

Institutional Ownership Trend

22 quarters

Holder Concentration

Across 182 13F filers · Δ vs Mar 31, 2026

Top Holder

10.1%

+1.1 pts

Top 5

36.7%

+2.1 pts

Top 10

53.3%

+4.2 pts

HHI

417

Broadly held+50

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +7

Institutional value: +120.0%

Shares held: +5.4%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega AQR CAPITAL MANAGEMENT LLC	+4,062,111	5,150,020
Mega BlackRock, Inc.	+2,721,277	10,968,644
Mid Divisadero Street Capital Management, LP	+2,634,257	3,628,206
Mid GILDER GAGNON HOWE & CO LLC	+1,772,009	4,147,133
Mega D. E. Shaw & Co., Inc.	+1,733,047	1,806,511

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega Qube Research & Technologies Ltd	−1,972,710	763,188
Large MARSHALL WACE, LLP	−1,384,901	3,511,732
Large ACADIAN ASSET MANAGEMENT LLC	−1,235,625	1,727,119
Large Squarepoint Ops LLC	−1,197,770	452,320
Mega FMR LLC	−936,732	2,126,272

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mid ALGERT GLOBAL LLC	90,290	$618,486
Large POLEN CAPITAL MANAGEMENT LLC	75,291	$515,743
Mid BOOTHBAY FUND MANAGEMENT, LLC	69,642	$477,047
Mid Aquatic Capital Management LLC	63,578	$435,509
Mid LEVIN CAPITAL STRATEGIES, L.P.	50,000	$342,500

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Small Dynamic Technology Lab Private Ltd	248,892	$816,365
Mid Engineers Gate Manager LP	216,044	$708,624
Mid GSA CAPITAL PARTNERS LLP	200,668	$658,191
Mid Jump Financial, LLC	84,582	$277,428
Large Cetera Investment Advisers	66,676	$218,697

Filter: New 33 Increased 82 Reduced 46 Sold out 26 Unchanged 21

Showing 100 of 186

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$75,135,206

10.15%

10,968,644

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	374,277	$2,563,797	3.4%	Sole
BlackRock Asset Management Canada Ltd	385	$2,637	0.0%	Sole
BlackRock Investment Management, LLC	446,541	$3,058,805	4.1%	Sole
BLACKROCK ADVISORS LLC	1,265,562	$8,669,099	11.5%	Sole
BlackRock Fund Advisors	4,413,667	$30,233,618	40.2%	Sole
BlackRock Institutional Trust Company, N.A.	4,047,531	$27,725,587	36.9%	Sole
BlackRock Japan Co. Ltd	21,000	$143,850	0.2%	Sole
BlackRock Fund Managers Ltd.	16,484	$112,915	0.2%	Sole
BlackRock Investment Management (UK) Ltd.	112,757	$772,385	1.0%	Sole
BlackRock Asset Management Ireland Ltd	129,976	$890,335	1.2%	Sole
BlackRock (Luxembourg) S.A.	63,093	$432,187	0.6%	Sole
BlackRock Asset Management Schweiz AG	14,546	$99,640	0.1%	Sole
Aperio Group, LLC	62,825	$430,351	0.6%	Sole

NEEDHAM INVESTMENT MANAGEMENT LLC

$69,698,750

9.41%

10,175,000

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

Manager	Shares	Value (USD)	% of position	Discretion
Needham Aggressive Growth Fund	10,175,000	$69,698,750	100.0%	Defined

Capital World Investors

$61,238,794

8.27%

8,939,970

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	8,939,970	$61,238,794	100.0%	Defined

AQR CAPITAL MANAGEMENT LLC

$35,277,633

4.77%

5,150,020

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

Manager	Shares	Value (USD)	% of position	Discretion
Petros Family Wealth, LLC	800	$5,480	0.0%	Other
KEB ASSET MANAGEMENT, LLC	91	$623	0.0%	Other
RF&L WEALTH MANAGEMENT, LLC	110	$753	0.0%	Other
Compound Planning, Inc.	29	$198	0.0%	Other
Arax Advisory Partners	25,215	$172,722	0.5%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	14,394	$98,598	0.3%	Other
Stokes Family Office, LLC	5,499	$37,668	0.1%	Other
Held directly	5,103,882	$34,961,591	99.1%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$30,669,785

4.14%

4,477,341

GILDER GAGNON HOWE & CO LLC

$28,407,861

3.84%

4,147,133

Divisadero Street Capital Management, LP

$24,853,211

3.36%

3,628,206

MARSHALL WACE, LLP

$24,055,363

3.25%

3,511,732

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	3,511,732	$24,055,363	100.0%	Other

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$22,984,579

3.10%

3,355,413

STATE STREET CORP

$22,059,541

2.98%

3,220,371

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	3,220,371	$22,059,541	100.0%	Defined

GOLDMAN SACHS GROUP INC

$20,947,785

2.83%

3,058,071

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	2,195,437	$15,038,743	71.8%	Defined
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	852,121	$5,837,028	27.9%	Defined
Goldman Sachs Trust Company, N.A. joint	10,513	$72,014	0.3%	Other

GEODE CAPITAL MANAGEMENT, LLC

$18,400,750

2.49%

2,686,241

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	390,860	$2,677,391	14.6%	Defined
Held directly	2,295,381	$15,723,359	85.4%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$15,581,592

2.10%

2,274,685

TWO SIGMA INVESTMENTS, LP

$15,573,906

2.10%

2,273,563

BLAIR WILLIAM & CO/IL

$15,040,743

2.03%

2,195,729

FMR LLC

$14,564,963

1.97%

2,126,272

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	2,125,820	$14,561,867	100.0%	Defined
STRATEGIC ADVISERS LLC	452	$3,096	0.0%	Defined

CI INVESTMENTS INC.

$13,898,650

1.88%

2,029,000

Nuveen, LLC

$12,775,790

1.73%

1,865,079

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	125,338	$858,565	6.7%	Defined
TIAA CREF INVESTMENT MANAGEMENT LLC joint	678,450	$4,647,382	36.4%	Defined
TEACHERS ADVISORS, LLC joint	1,061,291	$7,269,843	56.9%	Defined

D. E. Shaw & Co., Inc.

$12,374,600

1.67%

1,806,511

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.	1,806,511	$12,374,600	100.0%	Defined

ACADIAN ASSET MANAGEMENT LLC

$11,830,765

1.60%

1,727,119

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

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	1,727,119	$11,830,765	100.0%	Defined

Woodson Capital Management, LP

$10,677,821

1.44%

1,558,806

READYSTATE ASSET MANAGEMENT LP

$10,334,841

1.40%

1,508,736

BloombergSen Inc.

$9,256,035

1.25%

1,351,246

GMT Capital Corp

$8,810,470

1.19%

1,286,200

FIL Ltd

$8,562,500

1.16%

1,250,000

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

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Investments Canada ULC	1,250,000	$8,562,500	100.0%	Defined

Zweig-DiMenna Associates LLC

$7,904,900

1.07%

1,154,000

Archon Capital Management LLC

$7,042,656

0.95%

1,028,125

NORTHERN TRUST CORP

$6,681,699

0.90%

975,431

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	880,821	$6,033,622	90.3%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	78,110	$535,052	8.0%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	16,500	$113,025	1.7%	Other

MILLENNIUM MANAGEMENT LLC

$6,410,908

0.87%

935,899

TUDOR INVESTMENT CORP ET AL

$6,067,764

0.82%

885,805

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$6,057,468

0.82%

884,302

TOCQUEVILLE ASSET MANAGEMENT L.P.

$6,028,000

0.81%

880,000

RENAISSANCE TECHNOLOGIES LLC

$5,743,040

0.78%

838,400

Onex Canada Asset Management Inc.

$5,371,982

0.73%

784,231

Connor, Clark & Lunn Investment Management Ltd.

$5,355,795

0.72%

781,868

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

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	781,868	$5,355,795	100.0%	Sole

Qube Research & Technologies Ltd

$5,227,837

0.71%

763,188

VANGUARD FIDUCIARY TRUST CO

$5,018,748

0.68%

732,664

UBS Group AG

$4,745,090

0.64%

692,714

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	4,956	$33,948	0.7%	Defined
UBS AG	687,758	$4,711,142	99.3%	Defined

PANAGORA ASSET MANAGEMENT INC

$4,527,713

0.61%

660,980

LANDSCAPE CAPITAL MANAGEMENT, L.L.C.

$3,383,098

0.46%

493,883

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

Manager	Shares	Value (USD)	% of position	Discretion
Landscape High Leverage Fund, LP	91,886	$629,419	18.6%	Defined
LANDSCAPE OFFSHORE HL FUND LTD.	256,133	$1,754,511	51.9%	Defined
Held directly	145,864	$999,168	29.5%	Sole

Squarepoint Ops LLC

$3,098,392

0.42%

452,320

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

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	452,320	$3,098,392	100.0%	Defined

IEQ CAPITAL, LLC

$2,670,390

0.36%

389,838

Trexquant Investment LP

$2,646,990

0.36%

386,422

Man Group plc

$2,354,749

0.32%

343,759

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

Manager	Shares	Value (USD)	% of position	Discretion
Numeric Investors LLC	343,759	$2,354,749	100.0%	Defined

Bank of New York Mellon Corp

$2,204,260

0.30%

321,790

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

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	118,758	$813,492	36.9%	Defined
The Bank of New York Mellon	203,031	$1,390,762	63.1%	Defined
Held directly	1	$6	0.0%	Defined

Point72 Asset Management, L.P.

$2,128,432

0.29%

310,720

CANADA PENSION PLAN INVESTMENT BOARD

$1,687,155

0.23%

246,300

Mariner, LLC

$1,672,174

0.23%

244,113

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

$1,457,870

0.20%

212,828

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	365	$2,500	0.2%	Defined
UBS Asset Management Switzerland AG	162,578	$1,113,659	76.4%	Defined
UBS Asset Management (UK) Ltd.	34,940	$239,339	16.4%	Sole
Held directly	14,945	$102,372	7.0%	Defined

CITADEL ADVISORS LLC

$1,392,953

0.19%

203,351

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	202,976	$1,390,385	99.8%	Defined
Held directly	375	$2,568	0.2%	Defined

Swiss National Bank

$1,389,180

0.19%

202,800

FEDERATED HERMES, INC.

$1,343,709

0.18%

196,162

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

Manager	Shares	Value (USD)	% of position	Discretion
FEDERATED MDTA LLC	196,162	$1,343,709	100.0%	Defined

Cerity Partners LLC

$1,334,707

0.18%

194,848

MORGAN STANLEY

$1,222,564

0.17%

178,477

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	6,911	$47,340	3.9%	Defined
MORGAN STANLEY & CO. LLC	34,872	$238,873	19.5%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	80,330	$550,260	45.0%	Defined
MORGAN STANLEY SMITH BARNEY LLC	31,439	$215,356	17.6%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	24,925	$170,735	14.0%	Defined

WELLS FARGO & COMPANY/MN

$1,161,560

0.16%

169,571

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	95,997	$657,579	56.6%	Defined
WELLS FARGO ADVISORS FINANCIAL NETWORK, LLC	10,993	$75,302	6.5%	Defined
WELLS FARGO CLEARING SERVICES, LLC	62,581	$428,679	36.9%	Defined

PEAK6 LLC

$1,124,132

0.15%

164,107

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

Manager	Shares	Value (USD)	% of position	Discretion
PEAK6 Investments LLC joint	164,107	$1,124,132	100.0%	Defined

DIKER MANAGEMENT LLC

$1,099,801

0.15%

160,555

BANK OF AMERICA CORP /DE/

$1,026,075

0.14%

149,792

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	78,959	$540,869	52.7%	Defined
BOFA SECURITIES, INC.	70,833	$485,206	47.3%	Defined

MERCER GLOBAL ADVISORS INC /ADV

$1,018,718

0.14%

148,718

Creative Planning

$1,000,948

0.14%

146,124

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

Manager	Shares	Value (USD)	% of position	Discretion
CREATIVE PLANNING TRUST Co LLC	74	$506	0.1%	Defined
Held directly	146,050	$1,000,442	99.9%	Sole

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

$958,767

0.13%

139,966

Crawford Fund Management, LLC

$856,935

0.12%

125,100

RHUMBLINE ADVISERS

$855,722

0.12%

124,923

SEI INVESTMENTS CO

$793,353

0.11%

115,818

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	206	$1,411	0.2%	Sole
SEI TRUST CO	115,612	$791,942	99.8%	Sole

Invesco Ltd.

$790,125

0.11%

115,347

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	16,293	$111,606	14.1%	Defined
Invesco Trust Co joint	41,660	$285,371	36.1%	Defined
Invesco Capital Management LLC	57,394	$393,148	49.8%	Defined

WEALTH ENHANCEMENT ADVISORY SERVICES, LLC

$773,844

0.10%

112,970

Byrne Asset Management LLC

$753,500

0.10%

110,000

DEUTSCHE BANK AG\

$734,785

0.10%

107,268

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	1,992	$13,645	1.9%	Defined
DWS Investments UK Ltd	105,276	$721,140	98.1%	Defined

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$695,960

0.09%

101,600

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	101,600	$695,960	100.0%	Other

Axim Planning & Wealth

$686,445

0.09%

100,211

ALGERT GLOBAL LLC

$618,486

0.08%

90,290

ALLIANCEBERNSTEIN L.P.

$613,143

0.08%

89,510

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

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	89,510	$613,143	100.0%	Defined

Legal & General Group Plc

$599,743

0.08%

87,554

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	10,204	$69,897	11.7%	Defined
Legal & General Investment Management Ltd joint	77,350	$529,846	88.3%	Defined

PRICE T ROWE ASSOCIATES INC /MD/

$592,079

0.08%

86,435

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	86,435	$592,079	100.0%	Defined

CITIGROUP INC

$576,050

0.08%

84,095

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	84,095	$576,050	100.0%	Defined

ROYAL BANK OF CANADA

$566,398

0.08%

82,686

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

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	3,203	$21,940	3.9%	Defined
RBC Capital Markets, LLC	5,424	$37,154	6.6%	Defined
RBC Dominion Securities Inc.	74,059	$507,304	89.6%	Defined

Brevan Howard Capital Management LP

$564,645

0.08%

82,430

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

Manager	Shares	Value (USD)	% of position	Discretion
Brevan Howard US Investment Management, LP	82,430	$564,645	100.0%	Defined

POLEN CAPITAL MANAGEMENT LLC

$515,743

0.07%

75,291

BOOTHBAY FUND MANAGEMENT, LLC

$477,047

0.06%

69,642

Simplicity Wealth,LLC

$444,702

0.06%

64,920

XTX Topco Ltd

$436,632

0.06%

63,742

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	63,742	$436,632	100.0%	Defined

Aquatic Capital Management LLC

$435,509

0.06%

63,578

Utah Retirement Systems

$433,228

0.06%

63,245

MetLife Investment Management, LLC

$429,960

0.06%

62,768

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

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	62,768	$429,960	100.0%	Defined

CAPTRUST FINANCIAL ADVISORS

$422,281

0.06%

61,647

LVW Advisors, LLC

$417,267

0.06%

60,915

JPMORGAN CHASE & CO

$404,964

0.05%

59,119

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.	55,126	$377,613	93.2%	Defined
J.P. Morgan Investment Management Inc.	3,485	$23,872	5.9%	Defined
J.P. Morgan Securities LLC	18	$123	0.0%	Defined
J.P. Morgan Securities plc	490	$3,356	0.8%	Defined

VANGUARD ASSET MANAGEMENT, Ltd

$403,526

0.05%

58,909

STATE OF WISCONSIN INVESTMENT BOARD

$380,661

0.05%

55,571

CITADEL ADVISORS LLC

$375,380

0.05%

54,800

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	54,800	$375,380	100.0%	Defined

Rafferty Asset Management, LLC

$368,440

0.05%

53,787

Empowered Funds, LLC

$362,789

0.05%

52,962

SUSQUEHANNA INTERNATIONAL GROUP, LLP

$349,815

0.05%

51,068

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

Manager	Shares	Value (USD)	% of position	Discretion
SUSQUEHANNA SECURITIES, LLC	51,068	$349,815	100.0%	Other

LEVIN CAPITAL STRATEGIES, L.P.

$342,500

0.05%

50,000

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$330,526

0.04%

48,252

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	48,252	$330,526	100.0%	Defined

SG Americas Securities, LLC

$326,361

0.04%

47,644

WINTON GROUP Ltd

$320,196

0.04%

46,744

HSBC HOLDINGS PLC

$308,633

0.04%

45,056

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

Manager	Shares	Value (USD)	% of position	Discretion
HSBC BANK PLC	45,056	$308,633	100.0%	Defined

Quantbot Technologies LP

$276,335

0.04%

40,341

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

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	40,341	$276,335	100.0%	Sole

Vanguard Global Advisers, LLC

$274,972

0.04%

40,142

Key facts CIK 1484778 CUSIP 88556E102 13F (30d) 145 filings 145 filers Visit website Investor relations