Tidewater Inc: which funds bought and sold

Institutions that bought and sold Tidewater 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, 173 institutions that filed 13F reports for both quarters added to or opened positions in Tidewater, and 178 cut or closed them. Together they added a net 4.8M shares, +9.2% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 2.4M shares (+15.6%); index fund managers were net buyers of 731K shares (+4.5%). 47 opened a new position and 52 sold out entirely.

Bought, Q2 2026 173 institutions, 47 of them new holders Sold, Q2 2026 178 institutions, 52 of them sold out

Net change, all compared +4.8M shares (+9.2%)

Net change, active managers +2.4M shares (+15.6%), 21 bought, 23 sold

Buyers versus sellers

institutions compared, 406

173 bought 55 178 sold

Active managers and hedge funds 21 bought · 23 sold · +2.4M

Index fund managers 8 bought · 3 sold · +731K

Other institutions 144 bought · 152 sold · +1.7M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Baillie Gifford & Co Active manager	+1.0M +154.9%	1.7M	$111M
Citadel Advisors LLC Hedge fund	+1.0M +415.0%	1.2M	$83.2M
Sourcerock Group LLC	+981K +231.7%	1.4M	$93.6M
Price T Rowe Associates Inc Active manager	+476K +14.9%	3.7M	$245M
Blackrock, Inc. Index funds	+307K +4.2%	7.6M	$503M
Zurich Insurance Group Ltd	+299K New position	299K	$19.9M
Millennium Management LLC Hedge fund	+296K +1192.3%	321K	$21.4M
Morgan Stanley	+294K +52.2%	858K	$57.2M
Fort Washington Investment Advisors Inc	+283K +70.7%	684K	$45.6M
American Century Companies Inc Active manager	+282K +21.2%	1.6M	$108M
Dimensional Fund Advisors LP	+243K +13.2%	2.1M	$139M
Geode Capital Management, LLC Index funds	+204K +17.9%	1.3M	$89.7M
Bank Of America Corp	+177K +71.8%	425K	$28.3M
Goldman Sachs Group Inc	+158K +41.7%	537K	$35.8M
Wellington Management Group LLP Active manager	+147K +11.1%	1.5M	$98.3M
Vanguard Portfolio Management LLC Index funds	+136K +5.2%	2.8M	$184M
Timessquare Capital Management, LLC	+125K +116.3%	232K	$15.5M
FMR LLC Active manager	+102K +38.8%	366K	$24.4M
Fideuram Asset Management (Ireland) Dac	+100K +3417.2%	103K	$8.2M
Mitsubishi Ufj Trust & Banking Corp	+87K +1762.9%	92K	$6.1M

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Baillie Gifford & Co Active manager	+1.0M +154.9%	1.7M	$111M
Citadel Advisors LLC Hedge fund	+1.0M +415.0%	1.2M	$83.2M
Price T Rowe Associates Inc Active manager	+476K +14.9%	3.7M	$245M
Millennium Management LLC Hedge fund	+296K +1192.3%	321K	$21.4M
American Century Companies Inc Active manager	+282K +21.2%	1.6M	$108M
Wellington Management Group LLP Active manager	+147K +11.1%	1.5M	$98.3M
FMR LLC Active manager	+102K +38.8%	366K	$24.4M
Balyasny Asset Management L.P. Hedge fund	+83K +52.8%	240K	$16M
Boothbay Fund Management, LLC Hedge fund	+69K +555.5%	81K	$5.4M
First Manhattan Co. Llc. Active manager	+53K +115.6%	99K	$6.6M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Neuberger Berman Group LLC Active manager	−468K −14.3%	2.8M	$187M
UBS Group AG	−456K −30.1%	1.1M	$70.3M
Driehaus Capital Management LLC Active manager	−200K −26.4%	558K	$37.2M
Ameriprise Financial Inc	−183K −45.8%	216K	$14.4M
Frontier Capital Management Co LLC Active manager	−178K −16.6%	895K	$59.6M
Cambria Investment Management, L.P.	−121K Sold out	0	—
Tudor Investment Corp Et Al Hedge fund	−116K Sold out	0	—
Federated Hermes, Inc. Active manager	−109K −21.7%	392K	$26.1M
Van Eck Associates Corp	−97K −11.3%	764K	$50.9M
Jpmorgan Chase & Co	−75K −63.3%	44K	$3.1M
Jupiter Asset Management Ltd Active manager	−72K Sold out	0	—
Canoe Financial LP	−64K −23.4%	210K	$14M
Hosking Partners LLP Active manager	−53K −8.0%	610K	$40.6M
Pacer Advisors, Inc.	−50K −27.1%	135K	$9M
Fulcrum Asset Management LLP	−47K −100.0%	10	$666
Group One Trading LLC	−45K −72.0%	17K	$1.2M
Villere St Denis J & Co LLC	−43K −14.7%	250K	$16.6M
Russell Investments Group, Ltd.	−37K −37.7%	61K	$4.1M
Calamos Advisors LLC Active manager	−37K Sold out	0	—
Invesco Ltd.	−35K −10.8%	292K	$19.5M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Neuberger Berman Group LLC Active manager	−468K −14.3%	2.8M	$187M
Driehaus Capital Management LLC Active manager	−200K −26.4%	558K	$37.2M
Frontier Capital Management Co LLC Active manager	−178K −16.6%	895K	$59.6M
Tudor Investment Corp Et Al Hedge fund	−116K Sold out	0	—
Federated Hermes, Inc. Active manager	−109K −21.7%	392K	$26.1M
Jupiter Asset Management Ltd Active manager	−72K Sold out	0	—
Hosking Partners LLP Active manager	−53K −8.0%	610K	$40.6M
Calamos Advisors LLC Active manager	−37K Sold out	0	—
GAMCO Investors, Inc. Et Al Active manager	−15K −75.9%	4,680	$311,828
Los Angeles Capital Management LLC Active manager	−14K −44.2%	18K	$1.2M

New positions

largest by value

Institution	Shares	Value June 30, 2026
Zurich Insurance Group Ltd	299K	$19.9M
Capstone Investment Advisors, LLCHedge fund	49K	$3.3M
Lloyd Harbor Capital Management, LLC	45K	$3M
Cresset Asset Management, LLC	37K	$2.4M
Lighthouse Investment Partners, LLCHedge fund	24K	$1.6M
Jacobs Levy Equity Management, IncActive manager	23K	$1.5M
Credit Agricole S A	21K	$1.4M
Bastion Asset Management Inc.	20K	$1.3M
Imc-Chicago, LLC	16K	$1.1M
Tejara Capital Ltd	15K	$999,450

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Cambria Investment Management, L.P.	121K	$10.1M
Tudor Investment Corp Et AlHedge fund	116K	$9.7M
Jupiter Asset Management LtdActive manager	72K	$6M
Calamos Advisors LLCActive manager	37K	$3.1M
Main Street Financial Solutions, LLC	29K	$2.4M
Sigma Planning Corp	20K	$1.7M
Readystate Asset Management LP	20K	$1.7M
Dakota Wealth Management	18K	$1.5M
Pensiondanmark Pensionsforsikringsaktieselskab	18K	$1.5M
Econ Financial Services Corp	15K	$1.3M

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 359
Ten largest holders: 50.7%
Index fund managers: 29.9%
Active managers and hedge funds: 30.6%

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	21	23	5	5	+2.4M	+15.6%
Index fund managers	8	3	0	0	+731K	+4.5%
Other institutions	144	152	42	47	+1.7M	+8.2%

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 Tidewater.

Only managers that filed a holdings report for both quarters are compared (406 here). 9 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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