TDUP · ThredUp Inc. · Shareholders & Ownership

$2.29 +0.14 (+6.51%) At close · Oct 20

Russell 2000 member Rebalance outlook locked

Market Cap

$282.37M

131.33M

Volume · Oct 20 965K Avg daily vol (3M) 2.41M

Every disclosed holder of TDUP in one list: 13F institutions, Schedule 13D and 13G filers, insiders (Forms 3, 4 and 5) and registered funds, each from its own latest filing. Holders nest by CIK and SEC reporting links, never by name, and each is summed once.

How the holder list picks a filing →

Who Owns TDUP

13F quarter Sep 30, 2026, combined view: filers that have not filed yet carry their Jun 30, 2026 positions

No chart: the summed disclosures exceed shares outstanding, so they are not parts of one whole.

Holder group	Holders	Shares	% Out	Summed
Institutional (13F)	176	107,561,284	81.90%	Yes
Insiders (Forms 3, 4, 5)	0	0	0.00%	No
13D/G-only blocks	6	32,916,176	25.06%	Yes
Remaining	—	9,143,810	-6.96%	Negative
Registered funds (N-PORT, not summed)	132	41,384,884	31.51%	No

Shares outstanding: 131,333,650, the issuer's latest cover-page count restated onto today's split basis.

Insiders are listed but not summed: the issuer has more than one class of common stock and Forms 3, 4 and 5 report one issuer-wide balance across them.

Remaining is negative: the summed disclosures exceed shares outstanding, as when filings are dated at different times or holders that do not disclose their links count the same shares. It is flagged, not clipped.

13D/G-only counts each filer's latest 13D or 13G that no 13F report of the listing contains, that names no 13F filer and that no counted insider files. Funds are never summed: their shares sit inside their advisers' 13F reports.

Holders of TDUP

One row per holder Every filing By ultimate parent

All 13F Funds Insiders 13D/G Non-US

#	Holder	Shares	% Out	Change	As of	Notes
1	BlackRock, Inc. 13F CIK 2012383 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	10,968,644	8.35%	+2,721,277	Jun 30, 2026	carried, not yet filed for the newest quarter
1.1	iShares Russell 2000 ETF Fund S000004344 · Registered fund · Jun 30, 2026 iShares Trust, not summed	2,763,569	2.10%	+305,196	Jun 30, 2026	iShares Trust, not summed
1.2	iShares Russell 2000 Growth ETF Fund S000004343 · Registered fund · Jun 30, 2026 iShares Trust, not summed	966,576	0.74%	+159,046	Jun 30, 2026	iShares Trust, not summed
1.3	BlackRock Advantage Small Cap Core Fund Fund S000039982 · Registered fund · May 29, 2026 BlackRock Funds, not summed	763,963	0.58%	+589,028	May 29, 2026	BlackRock Funds, not summed
1.4	iShares Micro-Cap ETF Fund S000004439 · Registered fund · Jun 30, 2026 iShares Trust, not summed	351,816	0.27%	+99,749	Jun 30, 2026	iShares Trust, not summed
1.5	Master Small Cap Index Series Fund S000002716 · Registered fund · Jun 30, 2026 Quantitative Master Series LLC, not summed	196,715	0.15%	+43,038	Jun 30, 2026	Quantitative Master Series LLC, not summed
2	NEEDHAM INVESTMENT MANAGEMENT LLC 13F CIK 1167212 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	10,175,000	7.75%	+900,000	Jun 30, 2026	carried, not yet filed for the newest quarter
2.1	Needham Aggressive Growth Fund Fund S000003815 · Registered fund · Jun 30, 2026 Needham Funds Inc, not summed	10,175,000	7.75%	+900,000	Jun 30, 2026	Needham Funds Inc, not summed
3	Capital World Investors 13F CIK 1422849 · Investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	8,939,970	6.81%	+232,370	Jun 30, 2026	carried, not yet filed for the newest quarter
4	SMALLCAP World Fund Inc Fund S000009599 · Registered fund · Jun 30, 2026 SMALLCAP World Fund Inc, not summed	8,707,600	6.63%	0	Jun 30, 2026	SMALLCAP World Fund Inc, not summed
5	Highland Management Partners VIII Limited 13G CIK 1467825 · Unknown · Dec 31, 2025 Rule 13d-1(d), exempt investor	8,154,331	6.21%	—	Dec 31, 2025	Rule 13d-1(d), exempt investor
6	Highland Management Partners VIII Limited 13G CIK 1554280 · Unknown · Dec 31, 2024 Rule 13d-1(d), exempt investor	8,011,968	6.10%	+359,802	Dec 31, 2024	Rule 13d-1(d), exempt investor
7	Needham Investment Management L.L.C. 13G CIK 1208854 · Sep 30, 2024 Rule 13d-1(c), passive investor	6,200,000	4.72%	—	Sep 30, 2024	Rule 13d-1(c), passive investor
8	AQR CAPITAL MANAGEMENT LLC 13F CIK 1167557 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	5,150,020	3.92%	+4,062,111	Jun 30, 2026	carried, not yet filed for the newest quarter
8.1	AQR Small Cap Momentum Style Fund Fund S000025644 · Registered fund · Mar 31, 2026 AQR Funds, not summed	26,183	0.02%	—	Mar 31, 2026	AQR Funds, not summed
9	VANGUARD CAPITAL MANAGEMENT LLC 13F CIK 2100119 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,477,341	3.41%	+114,130	Jun 30, 2026	carried, not yet filed for the newest quarter
10	GILDER GAGNON HOWE & CO LLC 13F CIK 902464 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	4,147,133	3.16%	+1,772,009	Jun 30, 2026	carried, not yet filed for the newest quarter
11	Divisadero Street Capital Management, LP 13F CIK 1901865 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,628,206	2.76%	+2,634,257	Jun 30, 2026	carried, not yet filed for the newest quarter
12	MARSHALL WACE, LLP 13F CIK 1318757 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,511,732	2.67%	-1,384,901	Jun 30, 2026	carried, not yet filed for the newest quarter
13	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 13F CIK 1164508 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	3,355,413	2.55%	+389,929	Jun 30, 2026	carried, not yet filed for the newest quarter
14	STATE STREET CORP 13F CIK 93751 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	3,220,371	2.45%	+126,407	Jun 30, 2026	carried, not yet filed for the newest quarter
14.1	State Street(R) SPDR(R) S&P(R) Retail ETF Fund S000012322 · Registered fund · Jun 30, 2026 SPDR SERIES TRUST, not summed	814,133	0.62%	+199,483	Jun 30, 2026	SPDR SERIES TRUST, not summed
14.2	STATE STREET SMALL/MID CAP EQUITY INDEX PORTFOLIO Fund S000050332 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	36,400	0.03%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
14.3	State Street Total Return V.I.S. Fund Fund S000001637 · Registered fund · Jun 30, 2026 STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed	2,656	0.00%	-40	Jun 30, 2026	STATE STREET VARIABLE INSURANCE SERIES FUNDS INC, not summed
14.4	State Street(R) SPDR(R) Portfolio MSCI Global Stock Market ETF Fund S000036082 · Registered fund · Jun 30, 2026 SPDR INDEX SHARES FUNDS, not summed	1,832	0.00%	+204	Jun 30, 2026	SPDR INDEX SHARES FUNDS, not summed
14.5	State Street Balanced Index Fund Fund S000082802 · Registered fund · Jun 30, 2026 STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed	640	0.00%	0	Jun 30, 2026	STATE STREET INSTITUTIONAL INVESTMENT TRUST, not summed
15	VANGUARD TOTAL STOCK MARKET INDEX FUND Fund S000002848 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	3,203,386	2.44%	+89,900	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
16	GOLDMAN SACHS GROUP INC 13F CIK 886982 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	3,058,071	2.33%	+973,210	Jun 30, 2026	carried, not yet filed for the newest quarter
16.1	Goldman Sachs Small Cap Equity Insights Fund Fund S000009329 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	156,713	0.12%	—	Jul 31, 2026	Goldman Sachs Trust, not summed
16.2	Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF Fund S000048296 · Registered fund · May 31, 2026 Goldman Sachs ETF Trust, not summed	143,806	0.11%	+22,957	May 31, 2026	Goldman Sachs ETF Trust, not summed
16.3	Goldman Sachs Absolute Return Tracker Fund Fund S000020314 · Registered fund · Jun 30, 2026 GOLDMAN SACHS TRUST, not summed	75,599	0.06%	+56,605	Jun 30, 2026	GOLDMAN SACHS TRUST, not summed
16.4	Goldman Sachs Small Cap Growth Insights Fund Fund S000014930 · Registered fund · Jul 31, 2026 Goldman Sachs Trust, not summed	45,250	0.03%	+32,353	Jul 31, 2026	Goldman Sachs Trust, not summed
16.5	Goldman Sachs Variable Insurance Trust Small Cap Equity Insights Fund Fund S000009355 · Registered fund · Jun 30, 2026 Goldman Sachs Variable Insurance Trust, not summed	21,779	0.02%	+9,808	Jun 30, 2026	Goldman Sachs Variable Insurance Trust, not summed
17	Patricia Nakache 13G CIK 1461710 · Unknown · Dec 31, 2024 Rule 13d-1(d), exempt investor	3,006,881	2.29%	-4,066,756	Dec 31, 2024	Rule 13d-1(d), exempt investor
18	GEODE CAPITAL MANAGEMENT, LLC 13F CIK 1214717 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,686,241	2.05%	+331,170	Jun 30, 2026	carried, not yet filed for the newest quarter
19	VANGUARD PORTFOLIO MANAGEMENT LLC 13F CIK 2100121 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,274,685	1.73%	-176,011	Jun 30, 2026	carried, not yet filed for the newest quarter
20	TWO SIGMA INVESTMENTS, LP 13F CIK 1179392 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,273,563	1.73%	+50,056	Jun 30, 2026	carried, not yet filed for the newest quarter
21	BLAIR WILLIAM & CO/IL 13F CIK 902367 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	2,195,729	1.67%	+113,175	Jun 30, 2026	carried, not yet filed for the newest quarter
22	FMR LLC 13F CIK 315066 · Holding company · Jun 30, 2026 carried, not yet filed for the newest quarter	2,126,272	1.62%	-936,732	Jun 30, 2026	carried, not yet filed for the newest quarter
22.1	Fidelity Enhanced Small Cap Core ETF Fund S000081807 · Registered fund · Jun 30, 2026 Fidelity Covington Trust, not summed	1,685,685	1.28%	+292,499	Jun 30, 2026	Fidelity Covington Trust, not summed
22.2	Fidelity Small Cap Index Fund Fund S000033638 · Registered fund · Jul 31, 2026 Fidelity Salem Street Trust, not summed	1,151,959	0.88%	+162,047	Jul 31, 2026	Fidelity Salem Street Trust, not summed
22.3	Fidelity Extended Market Index Fund Fund S000006021 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	510,540	0.39%	+134,700	May 31, 2026	Fidelity Concord Street Trust, not summed
22.4	VIP Disciplined Small Cap Portfolio Fund S000007725 · Registered fund · Jun 30, 2026 Variable Insurance Products Fund II, not summed	418,332	0.32%	-59,487	Jun 30, 2026	Variable Insurance Products Fund II, not summed
22.5	Fidelity Total Market Index Fund Fund S000006026 · Registered fund · May 31, 2026 Fidelity Concord Street Trust, not summed	179,556	0.14%	0	May 31, 2026	Fidelity Concord Street Trust, not summed
23	CI INVESTMENTS INC. 13F CIK 1163648 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	2,029,000	1.54%	+219,000	Jun 30, 2026	carried, not yet filed for the newest quarter
24	Nuveen, LLC 13F CIK 1871926 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,865,079	1.42%	+566,832	Jun 30, 2026	carried, not yet filed for the newest quarter
24.1	College Retirement Equities Fund - Total Global Stock Account Fund S000005080 · Registered fund · Jun 30, 2026 College Retirement Equities Fund, not summed	755,795	0.58%	+342,095	Jun 30, 2026	College Retirement Equities Fund, not summed
24.2	Nuveen Quant Small/Mid Cap Equity Fund Fund S000054623 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	573,330	0.44%	-166,600	Jul 31, 2026	TIAA-CREF Funds, not summed
24.3	Nuveen Small Cap Blend Index Fund Fund S000005367 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	138,853	0.11%	+20,787	Jul 31, 2026	TIAA-CREF Funds, not summed
24.4	Nuveen ESG Small-Cap ETF Fund S000055815 · Registered fund · Jul 31, 2026 NuShares ETF Trust, not summed	101,938	0.08%	-2,779	Jul 31, 2026	NuShares ETF Trust, not summed
24.5	Nuveen Equity Index Fund Fund S000005360 · Registered fund · Jul 31, 2026 TIAA-CREF Funds, not summed	84,815	0.06%	0	Jul 31, 2026	TIAA-CREF Funds, not summed
25	D. E. Shaw & Co., Inc. 13F CIK 1009207 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,806,511	1.38%	+1,733,047	Jun 30, 2026	carried, not yet filed for the newest quarter
26	ACADIAN ASSET MANAGEMENT LLC 13F CIK 916542 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,727,119	1.32%	-1,235,625	Jun 30, 2026	carried, not yet filed for the newest quarter
27	Reinhart James G. Insider CIK 1849447 · Sep 2, 2026 Director, Chief Executive Officer, issuer-wide, not summed	1,691,648	1.29%	+159,587	Sep 2, 2026	Director, Chief Executive Officer, issuer-wide, not summed
27.1	James G. Reinhart 13G CIK 1849447 · Unknown · Sep 30, 2025 Rule 13d-1(d), exempt investor	7,450,393	5.67%	-415,656	Sep 30, 2025	Rule 13d-1(d), exempt investor
28	Woodson Capital Management, LP 13F CIK 1697848 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,558,806	1.19%	-136,194	Jun 30, 2026	carried, not yet filed for the newest quarter
29	READYSTATE ASSET MANAGEMENT LP 13F CIK 1900923 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,508,736	1.15%	+1,001,482	Jun 30, 2026	carried, not yet filed for the newest quarter
30	Homer Christopher Insider CIK 1850197 · Sep 2, 2026 Chief Operating Officer, issuer-wide, not summed	1,398,088	1.06%	+62,265	Sep 2, 2026	Chief Operating Officer, issuer-wide, not summed
31	BloombergSen Inc. 13F CIK 1484047 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,351,246	1.03%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
32	GMT Capital Corp 13F CIK 1106191 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,286,200	0.98%	+584,600	Jun 30, 2026	carried, not yet filed for the newest quarter
33	FIL Ltd 13F CIK 318989 · Non-US institution · Jun 30, 2026 carried, not yet filed for the newest quarter	1,250,000	0.95%	+250,000	Jun 30, 2026	carried, not yet filed for the newest quarter
34	VANGUARD EXTENDED MARKET INDEX FUND Fund S000002841 · Registered fund · Jun 30, 2026 VANGUARD INDEX FUNDS, not summed	1,157,314	0.88%	+41,424	Jun 30, 2026	VANGUARD INDEX FUNDS, not summed
35	Zweig-DiMenna Associates LLC 13F CIK 1533950 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	1,154,000	0.88%	-300,500	Jun 30, 2026	carried, not yet filed for the newest quarter
36	Archon Capital Management LLC 13F CIK 1398825 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	1,028,125	0.78%	-210,000	Jun 30, 2026	carried, not yet filed for the newest quarter
37	NORTHERN TRUST CORP 13F CIK 73124 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	975,431	0.74%	+96,601	Jun 30, 2026	carried, not yet filed for the newest quarter
37.1	Small Cap Index Fund Fund S000001245 · Registered fund · Jun 30, 2026 Northern Funds, not summed	53,499	0.04%	+10,698	Jun 30, 2026	Northern Funds, not summed
37.2	Small Cap Core Fund Fund S000001244 · Registered fund · Jun 30, 2026 Northern Funds, not summed	10,204	0.01%	-455	Jun 30, 2026	Northern Funds, not summed
38	MILLENNIUM MANAGEMENT LLC 13F CIK 1273087 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	935,899	0.71%	-747,584	Jun 30, 2026	carried, not yet filed for the newest quarter
39	TUDOR INVESTMENT CORP ET AL 13F CIK 923093 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	885,805	0.67%	-66,281	Jun 30, 2026	carried, not yet filed for the newest quarter
40	CHARLES SCHWAB INVESTMENT MANAGEMENT INC 13F CIK 884546 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	884,302	0.67%	+84,281	Jun 30, 2026	carried, not yet filed for the newest quarter
40.1	Schwab U.S. Small-Cap ETF Fund S000026636 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	468,624	0.36%	-7,630	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
40.2	Schwab Small-Cap Index Fund Fund S000005912 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	255,757	0.19%	+38,564	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
40.3	Schwab Total Stock Market Index Fund Fund S000005913 · Registered fund · Jul 31, 2026 SCHWAB CAPITAL TRUST, not summed	69,107	0.05%	-30,000	Jul 31, 2026	SCHWAB CAPITAL TRUST, not summed
40.4	Schwab U.S. Broad Market ETF Fund S000026631 · Registered fund · May 31, 2026 SCHWAB STRATEGIC TRUST, not summed	45,075	0.03%	-10,607	May 31, 2026	SCHWAB STRATEGIC TRUST, not summed
41	TOCQUEVILLE ASSET MANAGEMENT L.P. 13F CIK 883961 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	880,000	0.67%	0	Jun 30, 2026	carried, not yet filed for the newest quarter
42	RENAISSANCE TECHNOLOGIES LLC 13F CIK 1037389 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	838,400	0.64%	-573,153	Jun 30, 2026	carried, not yet filed for the newest quarter
43	Onex Canada Asset Management Inc. 13F CIK 905790 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	784,231	0.60%	-78,251	Jun 30, 2026	carried, not yet filed for the newest quarter
44	Connor, Clark & Lunn Investment Management Ltd. 13F CIK 1596800 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	781,868	0.60%	-213,605	Jun 30, 2026	carried, not yet filed for the newest quarter
45	Qube Research & Technologies Ltd 13F CIK 1729829 · Exempt reporting adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	763,188	0.58%	-1,972,710	Jun 30, 2026	carried, not yet filed for the newest quarter
46	VANGUARD FIDUCIARY TRUST CO 13F CIK 933478 · Unknown · Jun 30, 2026 carried, not yet filed for the newest quarter	732,664	0.56%	+28,354	Jun 30, 2026	carried, not yet filed for the newest quarter
47	UBS Group AG 13F CIK 1610520 · Bank · Jun 30, 2026 carried, not yet filed for the newest quarter	692,714	0.53%	-679,403	Jun 30, 2026	carried, not yet filed for the newest quarter
48	Paransky Noam Insider CIK 2022533 · Jul 20, 2026 Director, issuer-wide, not summed	686,572	0.52%	+2,265	Jul 20, 2026	Director, issuer-wide, not summed
49	PANAGORA ASSET MANAGEMENT INC 13F CIK 883677 · Registered investment adviser · Jun 30, 2026 carried, not yet filed for the newest quarter	660,980	0.50%	+16,783	Jun 30, 2026	carried, not yet filed for the newest quarter
50	Sobers Sean Insider CIK 1688472 · Sep 2, 2026 Chief Financial Officer, issuer-wide, not summed	637,360	0.49%	+41,551	Sep 2, 2026	Chief Financial Officer, issuer-wide, not summed

22 more nested rows are not shown here; Every filing lists them all.

Shares are restated onto today's split basis. Change compares each row with the same holder's previous filing in the same source; a dash means there is none to compare. Nested 13D/G, insider and fund rows are not summed, since a 13F report already holds them.

Showing 1–50 of 258 holders

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Key facts CIK 1484778 CUSIP 88556E102 13F (30d) 15 filings 15 filers Visit website Investor relations