Hudson Technologies Inc: which funds bought and sold

Institutions that bought and sold Hudson Technologies 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, 71 institutions that filed 13F reports for both quarters added to or opened positions in Hudson Technologies, and 81 cut or closed them. Together they sold a net 1.3M shares, −4.1% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 945K shares (−10.9%); index fund managers were net sellers of 70K shares (−0.9%). 25 opened a new position and 30 sold out entirely.

Bought, Q2 2026 71 institutions, 25 of them new holders Sold, Q2 2026 81 institutions, 30 of them sold out

Net change, all compared −1.3M shares (−4.1%)

Net change, active managers −945K shares (−10.9%), 11 bought, 22 sold

Buyers versus sellers

institutions compared, 180

71 bought 28 81 sold

Active managers and hedge funds 11 bought · 22 sold · −945K

Index fund managers 5 bought · 4 sold · −70K

Other institutions 55 bought · 55 sold · −328K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Hartree Partners, LP	+612K +16.1%	4.4M	$25.3M
Nuveen, LLC	+393K +469.2%	477K	$2.7M
Qube Research & Technologies Ltd Hedge fund	+351K +94.6%	722K	$4.1M
Jacobs Levy Equity Management, Inc Active manager	+328K +183.1%	507K	$2.9M
Ancora Advisors LLC	+303K New position	303K	$1.7M
Marshall Wace, LLP Hedge fund	+255K +116.3%	474K	$2.7M
Kerrisdale Advisers, LLC	+242K +420.6%	300K	$1.7M
Russell Investments Group, Ltd.	+208K +134.8%	362K	$2.1M
Westerly Capital Management, LLC	+205K +6.5%	3.4M	$19.4M
Citadel Advisors LLC Hedge fund	+162K +39.1%	574K	$3.3M
KBC Group NV	+84K +68.7%	207K	$1.2M
Bailard, Inc.	+57K New position	57K	$324,735
D. E. Shaw & Co., Inc. Hedge fund	+51K +14.2%	410K	$2.4M
Odyssean, LLC	+51K New position	51K	$290,863
Geode Capital Management, LLC Index funds	+46K +4.9%	995K	$5.7M
Sanctuary Advisors, LLC	+46K New position	46K	$266,015
Point72 Asset Management, L.P. Hedge fund	+46K New position	46K	$262,496
Ameriprise Financial Inc	+41K +72.4%	98K	$564,782
Squarepoint Ops LLC Hedge fund	+40K +154.5%	66K	$380,103
Entrypoint Capital, LLC	+33K New position	33K	$192,066

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Qube Research & Technologies Ltd Hedge fund	+351K +94.6%	722K	$4.1M
Jacobs Levy Equity Management, Inc Active manager	+328K +183.1%	507K	$2.9M
Marshall Wace, LLP Hedge fund	+255K +116.3%	474K	$2.7M
Citadel Advisors LLC Hedge fund	+162K +39.1%	574K	$3.3M
D. E. Shaw & Co., Inc. Hedge fund	+51K +14.2%	410K	$2.4M
Point72 Asset Management, L.P. Hedge fund	+46K New position	46K	$262,496
Squarepoint Ops LLC Hedge fund	+40K +154.5%	66K	$380,103
Price T Rowe Associates Inc Active manager	+16K +19.9%	96K	$551,000
Boothbay Fund Management, LLC Hedge fund	+11K New position	11K	$64,632
Schonfeld Strategic Advisors LLC Hedge fund	+6,812 +15.9%	50K	$284,289

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
New South Capital Management Inc	−1.2M Sold out	0	—
Segall Bryant & Hamill, LLC Active manager	−628K Sold out	0	—
Public Employees Retirement System Of Ohio	−359K −87.4%	51K	$295,604
Lazard Asset Management LLC Active manager	−326K Sold out	0	—
American Century Companies Inc Active manager	−318K −21.4%	1.2M	$6.7M
AQR Capital Management LLC Hedge fund	−182K −53.0%	162K	$929,324
Dimensional Fund Advisors LP	−180K −8.4%	2.0M	$11.3M
O'Shaughnessy Asset Management, LLC Active manager	−171K Sold out	0	—
Grimes & Co Wealth Management, LLC	−159K Sold out	0	—
Two Sigma Investments, LP Hedge fund	−141K −51.6%	132K	$757,450
Northern Trust Corp Index funds	−117K −29.4%	282K	$1.6M
Morgan Stanley	−105K −22.2%	367K	$2.1M
Arrowstreet Capital, Limited Partnership Hedge fund	−103K −11.7%	778K	$4.5M
Zazove Associates LLC	−100K Sold out	0	—
Edgerock Capital LLC	−91K Sold out	0	—
Mackenzie Financial Corp	−82K Sold out	0	—
Bank Of New York Mellon Corp	−78K −27.5%	205K	$1.2M
Strs Ohio	−77K Sold out	0	—
Millennium Management LLC Hedge fund	−73K Sold out	0	—
Jane Street Group, LLC	−70K Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Segall Bryant & Hamill, LLC Active manager	−628K Sold out	0	—
Lazard Asset Management LLC Active manager	−326K Sold out	0	—
American Century Companies Inc Active manager	−318K −21.4%	1.2M	$6.7M
AQR Capital Management LLC Hedge fund	−182K −53.0%	162K	$929,324
O'Shaughnessy Asset Management, LLC Active manager	−171K Sold out	0	—
Two Sigma Investments, LP Hedge fund	−141K −51.6%	132K	$757,450
Arrowstreet Capital, Limited Partnership Hedge fund	−103K −11.7%	778K	$4.5M
Millennium Management LLC Hedge fund	−73K Sold out	0	—
Renaissance Technologies LLC Hedge fund	−62K −4.1%	1.4M	$8.3M
Winton Group Ltd Hedge fund	−59K Sold out	0	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Ancora Advisors LLC	303K	$1.7M
Bailard, Inc.	57K	$324,735
Odyssean, LLC	51K	$290,863
Sanctuary Advisors, LLC	46K	$266,015
Point72 Asset Management, L.P.Hedge fund	46K	$262,496
Entrypoint Capital, LLC	33K	$192,066
Park Capital Management, LLC / Wi	27K	$155,428
Xtx Topco Ltd	21K	$121,395
Connor, Clark & Lunn Investment Management Ltd.	19K	$106,454
Symmetry Partners, LLC	18K	$103,509

Sold out

largest by value

Institution	Shares	Value March 31, 2026
New South Capital Management Inc	1.2M	$7.3M
Segall Bryant & Hamill, LLCActive manager	628K	$3.7M
Lazard Asset Management LLCActive manager	326K	$1.9M
O'Shaughnessy Asset Management, LLCActive manager	171K	$1M
Grimes & Co Wealth Management, LLC	159K	$932,674
Zazove Associates LLC	100K	$636,500
Edgerock Capital LLC	91K	$532,240
Mackenzie Financial Corp	82K	$484,153
Strs Ohio	77K	$453,348
Millennium Management LLCHedge fund	73K	$427,376

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 151
Ten largest holders: 61.8%
Index fund managers: 23.3%
Active managers and hedge funds: 24.4%

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	11	22	2	11	−945K	−10.9%
Index fund managers	5	4	0	0	−70K	−0.9%
Other institutions	55	55	23	19	−328K	−1.9%

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 Hudson Technologies.

Only managers that filed a holdings report for both quarters are compared (180 here). 6 other holders are 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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