Seacor Marine Holdings Inc.: which funds bought and sold

Institutions that bought and sold Seacor Marine 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, 46 institutions that filed 13F reports for both quarters added to or opened positions in Seacor Marine, and 39 cut or closed them. Together they added a net 1.5M shares, +12.4% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 1000K shares (+52.9%); index fund managers were net buyers of 9,000 shares (+0.2%). 15 opened a new position and 9 sold out entirely.

Bought, Q2 2026 46 institutions, 15 of them new holders Sold, Q2 2026 39 institutions, 9 of them sold out

Net change, all compared +1.5M shares (+12.4%)

Net change, active managers +1000K shares (+52.9%), 8 bought, 7 sold

Buyers versus sellers

institutions compared, 104

46 bought 19 39 sold

Active managers and hedge funds 8 bought · 7 sold · +1000K

Index fund managers 5 bought · 4 sold · +9,000

Other institutions 33 bought · 28 sold · +444K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
First Eagle Investment Management, LLC Active manager	+997K +93.2%	2.1M	$15.8M
Flat Footed LLC	+684K New position	684K	$5.2M
AQR Capital Management LLC Hedge fund	+56K New position	56K	$424,996
Blackrock, Inc. Index funds	+54K +3.5%	1.6M	$12.2M
UBS Group AG	+44K +67.3%	109K	$832,840
Geode Capital Management, LLC Index funds	+27K +5.3%	531K	$4.1M
Vanguard Portfolio Management LLC Index funds	+22K +17.6%	149K	$1.1M
Xtx Topco Ltd	+16K +127.2%	28K	$217,895
Citigroup Inc	+15K +1490.9%	16K	$123,410
Levin Capital Strategies, L.P. Active manager	+12K New position	12K	$91,800
Wells Fargo & Company	+10K +126.0%	19K	$142,695
Russell Investments Group, Ltd.	+8,674 +477.6%	10K	$80,248
Glenorchy Capital Ltd	+8,334 +4.0%	219K	$1.7M
Deutsche Bank Ag\	+8,219 +60.8%	22K	$166,242
D. E. Shaw & Co., Inc. Hedge fund	+5,983 +10.0%	66K	$502,092
Price T Rowe Associates Inc Active manager	+5,508 +43.2%	18K	$140,000
Charles Schwab Investment Management Inc Index funds	+5,350 +9.2%	64K	$486,234
Nuveen, LLC	+4,453 +6.3%	75K	$572,320
Oppenheimer & Co Inc	+4,400 +2.0%	227K	$1.7M
Bank Of America Corp	+3,830 +8.3%	50K	$381,881

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
First Eagle Investment Management, LLC Active manager	+997K +93.2%	2.1M	$15.8M
AQR Capital Management LLC Hedge fund	+56K New position	56K	$424,996
Levin Capital Strategies, L.P. Active manager	+12K New position	12K	$91,800
D. E. Shaw & Co., Inc. Hedge fund	+5,983 +10.0%	66K	$502,092
Price T Rowe Associates Inc Active manager	+5,508 +43.2%	18K	$140,000
Wellington Management Group LLP Active manager	+3,223 +16.9%	22K	$170,572
Alliancebernstein L.P. Active manager	+2,800 +17.4%	19K	$135,252
Neuberger Berman Group LLC Active manager	+2,532 +15.5%	19K	$144,348

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Vanguard Capital Management LLC Index funds	−74K −7.3%	943K	$7.2M
Dimensional Fund Advisors LP	−66K −5.3%	1.2M	$9.1M
Goldman Sachs Group Inc	−60K −66.6%	30K	$229,064
Robotti Robert	−55K −7.1%	713K	$5.5M
Jpmorgan Chase & Co	−54K −36.6%	93K	$748,748
Citadel Advisors LLC Hedge fund	−47K −39.8%	72K	$550,639
Gsa Capital Partners LLP	−39K Sold out	0	—
Northern Trust Corp Index funds	−24K −12.3%	171K	$1.3M
Wilmington Savings Fund Society, Fsb	−20K −51.9%	19K	$142,038
Intech Investment Management LLC Active manager	−12K Sold out	0	—
First Manhattan Co. Llc. Active manager	−12K −3.6%	309K	$2.4M
Mirabella Financial Services LLP	−11K Sold out	0	—
Jane Street Group, LLC	−11K Sold out	0	—
Almanack Investment Partners, Llc.	−11K Sold out	0	—
Callan Family Office, LLC	−10K Sold out	0	—
Bridgeway Capital Management, LLC Active manager	−7,500 −11.7%	57K	$432,761
Empowered Funds, LLC	−7,500 −26.2%	21K	$161,951
Renaissance Technologies LLC Hedge fund	−6,200 −5.1%	114K	$873,630
Morgan Stanley	−4,258 −1.7%	248K	$1.9M
Susquehanna International Group, LLP	−4,000 −26.3%	11K	$85,588

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Citadel Advisors LLC Hedge fund	−47K −39.8%	72K	$550,639
Intech Investment Management LLC Active manager	−12K Sold out	0	—
First Manhattan Co. Llc. Active manager	−12K −3.6%	309K	$2.4M
Bridgeway Capital Management, LLC Active manager	−7,500 −11.7%	57K	$432,761
Renaissance Technologies LLC Hedge fund	−6,200 −5.1%	114K	$873,630
FMR LLC Active manager	−381 −3.5%	10K	$79,436
American Century Companies Inc Active manager	−222 −0.5%	48K	$363,398

New positions

largest by value

Institution	Shares	Value June 30, 2026
Flat Footed LLC	684K	$5.2M
AQR Capital Management LLCHedge fund	56K	$424,996
Levin Capital Strategies, L.P.Active manager	12K	$91,800
Arax Advisory Partners	1,411	$10,794
Osaic Holdings, Inc.	292	$2,233
Integrated Wealth Concepts LLC	204	$1,560
Essential Partners LLC	116	$887
Rialto Wealth Management, LLC	69	$528
Rothschild Investment LLC	18	$138
Fortitude Family Office, LLC	16	$122

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Gsa Capital Partners LLP	39K	$277,000
Intech Investment Management LLCActive manager	12K	$87,302
Mirabella Financial Services LLP	11K	$80,586
Jane Street Group, LLC	11K	$78,280
Almanack Investment Partners, Llc.	11K	$78,080
Callan Family Office, LLC	10K	$74,830
Ascentis Independent Advisors	600	$4,296
Root Financial Partners, LLC	37	$265
Mai Capital Management	3	$22

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 95
Ten largest holders: 75.9%
Index fund managers: 31.1%
Active managers and hedge funds: 21.9%

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	8	7	2	1	+1000K	+52.9%
Index fund managers	5	4	0	0	+9,000	+0.2%
Other institutions	33	28	13	8	+444K	+7.7%

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 Seacor Marine.

Only managers that filed a holdings report for both quarters are compared (104 here). 2 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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