1stdibs.com, Inc.: which funds bought and sold

Institutions that bought and sold 1stdibs.com shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 49 institutions that filed 13F reports for both quarters added to or opened positions in 1stdibs.com, and 42 cut or closed them. Together they sold a net 1.2M shares, −8.7% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 128K shares (−2.8%); index fund managers were net buyers of 1.8M shares (+81.3%). 19 opened a new position and 16 sold out entirely.

Bought, Q2 2026 49 institutions, 19 of them new holders Sold, Q2 2026 42 institutions, 16 of them sold out

Net change, all compared −1.2M shares (−8.7%)

Net change, active managers −128K shares (−2.8%), 12 bought, 15 sold

Buyers versus sellers

institutions compared, 103

49 bought 12 42 sold

Active managers and hedge funds 12 bought · 15 sold · −128K

Index fund managers 8 bought · 1 sold · +1.8M

Other institutions 29 bought · 26 sold · −2.9M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Blackrock, Inc. Index funds	+1.1M +386.9%	1.4M	$6.9M
Geode Capital Management, LLC Index funds	+300K +94.8%	616K	$3M
Acadian Asset Management LLC Active manager	+237K +34.5%	923K	$4.5M
Vanguard Portfolio Management LLC Index funds	+162K New position	162K	$795,255
Citadel Advisors LLC Hedge fund	+156K +240.3%	221K	$1.1M
Gsa Capital Partners LLP	+142K +658.3%	163K	$801,000
State Street Corp Index funds	+141K +99.8%	282K	$1.4M
Northern Trust Corp Index funds	+104K +120.5%	191K	$934,803
Trexquant Investment LP Hedge fund	+103K +395.2%	130K	$634,609
Jacobs Levy Equity Management, Inc Active manager	+103K +57.2%	284K	$1.4M
Fil Ltd Active manager	+100K +10.0%	1.1M	$5.4M
Squarepoint Ops LLC Hedge fund	+79K New position	79K	$388,913
Bank Of New York Mellon Corp	+64K New position	64K	$315,545
Charles Schwab Investment Management Inc Index funds	+58K +186.9%	89K	$435,762
Joel Isaacson & Co., LLC	+38K +3.8%	1.0M	$5.1M
Morgan Stanley	+36K +35.3%	138K	$675,950
Archon Capital Management LLC	+32K New position	32K	$154,473
Nuveen, LLC	+31K New position	31K	$152,067
Deutsche Bank Ag\	+23K New position	23K	$114,322
Wells Fargo & Company	+20K New position	20K	$98,074

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Acadian Asset Management LLC Active manager	+237K +34.5%	923K	$4.5M
Citadel Advisors LLC Hedge fund	+156K +240.3%	221K	$1.1M
Trexquant Investment LP Hedge fund	+103K +395.2%	130K	$634,609
Jacobs Levy Equity Management, Inc Active manager	+103K +57.2%	284K	$1.4M
Fil Ltd Active manager	+100K +10.0%	1.1M	$5.4M
Squarepoint Ops LLC Hedge fund	+79K New position	79K	$388,913
Price T Rowe Associates Inc Active manager	+20K New position	20K	$98,000
Algert Global LLC Hedge fund	+19K +55.9%	53K	$261,464
American Century Companies Inc Active manager	+8,709 +23.0%	47K	$227,875
O'Shaughnessy Asset Management, LLC Active manager	+5,060 +16.1%	36K	$178,634

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Kanen Wealth Management LLC	−2.1M Sold out	0	—
Susquehanna International Group, LLP	−417K Sold out	0	—
G2 Investment Partners Management LLC	−354K −78.6%	96K	$472,840
Millennium Management LLC Hedge fund	−297K −71.4%	119K	$584,639
683 Capital Management, LLC Hedge fund	−176K Sold out	0	—
Truffle Hound Capital, LLC	−159K −88.3%	21K	$103,307
Harspring Capital Management, LLC	−100K −15.4%	550K	$2.7M
Vanguard Capital Management LLC Index funds	−100K −8.2%	1.1M	$5.5M
Qube Research & Technologies Ltd Hedge fund	−93K −75.8%	30K	$145,613
Boothbay Fund Management, LLC Hedge fund	−81K −78.5%	22K	$108,476
Two Sigma Investments, LP Hedge fund	−71K −15.4%	387K	$1.9M
Topline Capital Management, LLC	−63K −86.1%	10K	$50,254
Point72 Asset Management, L.P. Hedge fund	−59K Sold out	0	—
Jane Street Group, LLC	−42K −47.7%	47K	$227,923
Hudson Bay Capital Management LP Hedge fund	−40K Sold out	0	—
Rbf Capital, LLC	−39K Sold out	0	—
Schonfeld Strategic Advisors LLC Hedge fund	−38K Sold out	0	—
Goldman Sachs Group Inc	−31K −22.4%	107K	$525,962
Xtx Topco Ltd	−29K Sold out	0	—
HRT Financial LP	−28K Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Millennium Management LLC Hedge fund	−297K −71.4%	119K	$584,639
683 Capital Management, LLC Hedge fund	−176K Sold out	0	—
Qube Research & Technologies Ltd Hedge fund	−93K −75.8%	30K	$145,613
Boothbay Fund Management, LLC Hedge fund	−81K −78.5%	22K	$108,476
Two Sigma Investments, LP Hedge fund	−71K −15.4%	387K	$1.9M
Point72 Asset Management, L.P. Hedge fund	−59K Sold out	0	—
Hudson Bay Capital Management LP Hedge fund	−40K Sold out	0	—
Schonfeld Strategic Advisors LLC Hedge fund	−38K Sold out	0	—
Marshall Wace, LLP Hedge fund	−26K −46.9%	30K	$146,618
Arrowstreet Capital, Limited Partnership Hedge fund	−20K −3.9%	502K	$2.5M

New positions

largest by value

Institution	Shares	Value June 30, 2026
Vanguard Portfolio Management LLCIndex funds	162K	$795,255
Squarepoint Ops LLCHedge fund	79K	$388,913
Bank Of New York Mellon Corp	64K	$315,545
Archon Capital Management LLC	32K	$154,473
Nuveen, LLC	31K	$152,067
Deutsche Bank Ag\	23K	$114,322
Wells Fargo & Company	20K	$98,074
Price T Rowe Associates IncActive manager	20K	$98,000
Rhumbline AdvisersIndex funds	18K	$85,800
New York State Common Retirement Fund	17K	$84,770

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Kanen Wealth Management LLC	2.1M	$11.4M
Susquehanna International Group, LLP	417K	$2.3M
683 Capital Management, LLCHedge fund	176K	$966,823
Point72 Asset Management, L.P.Hedge fund	59K	$322,630
Hudson Bay Capital Management LPHedge fund	40K	$218,064
Rbf Capital, LLC	39K	$215,050
Schonfeld Strategic Advisors LLCHedge fund	38K	$210,826
Xtx Topco Ltd	29K	$157,900
HRT Financial LP	28K	$156,000
Omers Administration Corp	22K	$121,550

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 87
Ten largest holders: 67.9%
Index fund managers: 30.8%
Active managers and hedge funds: 34.1%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	12	15	2	6	−128K	−2.8%
Index fund managers	8	1	2	0	+1.8M	+81.3%
Other institutions	29	26	15	10	−2.9M	−38.9%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on 1stdibs.com.

Only managers that filed a holdings report for both quarters are compared (103 here). 1 other holder is left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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