Prairie Operating Co.: which funds bought and sold

Institutions that bought and sold Prairie Operating 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, 69 institutions that filed 13F reports for both quarters added to or opened positions in Prairie Operating, and 64 cut or closed them. Together they added a net 1.5M shares, +8.1% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 1.3M shares (+36.7%); index fund managers were net sellers of 304K shares (−5.3%). 31 opened a new position and 39 sold out entirely.

Bought, Q2 2026 69 institutions, 31 of them new holders Sold, Q2 2026 64 institutions, 39 of them sold out

Net change, all compared +1.5M shares (+8.1%)

Net change, active managers +1.3M shares (+36.7%), 10 bought, 9 sold

Buyers versus sellers

institutions compared, 148

69 bought 15 64 sold

Active managers and hedge funds 10 bought · 9 sold · +1.3M

Index fund managers 3 bought · 7 sold · −304K

Other institutions 56 bought · 48 sold · +508K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
AQR Capital Management LLC Hedge fund	+2.1M +958.6%	2.4M	$1.7M
Vanguard Capital Management LLC Index funds	+1.3M +83.2%	2.8M	$2M
Lazard Asset Management LLC Active manager	+979K +616.9%	1.1M	$820,918
UBS Group AG	+709K +237.0%	1.0M	$728,125
Millennium Management LLC Hedge fund	+526K New position	526K	$379,420
Corient Private Wealth LP	+363K +519.0%	433K	$312,546
Fore Capital, LLC	+315K New position	315K	$227,273
Transcend Capital Advisors, LLC	+267K New position	267K	$192,663
Marex Group Ltd	+250K New position	250K	$180,493
BNP Paribas Financial Markets	+232K +3309.0%	239K	$172,737
HSBC Holdings PLC	+227K New position	227K	$154,435
Vanguard Fiduciary Trust Co Index funds	+208K +87.8%	445K	$321,167
Gsa Capital Partners LLP	+207K +359.0%	264K	$191,000
Wellington Management Group LLP Active manager	+178K +251.7%	249K	$179,482
Marshall Wace, LLP Hedge fund	+178K New position	178K	$127,854
Group One Trading LLC	+169K +39.3%	601K	$433,288
Ieq Capital, LLC	+164K +1196.0%	178K	$128,227
Bluefin Capital Management, LLC	+161K New position	161K	$115,801
Elco Management Co., LLC	+160K +112.9%	302K	$217,870
Sankala Group LLC	+120K New position	120K	$72,336

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
AQR Capital Management LLC Hedge fund	+2.1M +958.6%	2.4M	$1.7M
Lazard Asset Management LLC Active manager	+979K +616.9%	1.1M	$820,918
Millennium Management LLC Hedge fund	+526K New position	526K	$379,420
Wellington Management Group LLP Active manager	+178K +251.7%	249K	$179,482
Marshall Wace, LLP Hedge fund	+178K New position	178K	$127,854
Two Sigma Investments, LP Hedge fund	+54K +57.2%	149K	$107,428
Tudor Investment Corp Et Al Hedge fund	+41K New position	41K	$29,514
Engineers Gate Manager LP Hedge fund	+25K New position	25K	$17,936
FMR LLC Active manager	+19K +463.7%	23K	$16,745
Schonfeld Strategic Advisors LLC Hedge fund	+12K New position	12K	$8,766

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Hudson Bay Capital Management LP Hedge fund	−1.5M Sold out	0	—
Blackrock, Inc. Index funds	−1.2M −56.8%	880K	$634,894
Castleknight Management LP Hedge fund	−1.1M Sold out	0	—
Jane Street Group, LLC	−824K −87.6%	117K	$84,327
Susquehanna International Group, LLP	−522K −37.8%	861K	$621,051
Goldman Sachs Group Inc	−504K −96.4%	19K	$13,487
Diametric Capital, LP	−482K Sold out	0	—
State Street Corp Index funds	−257K −45.2%	311K	$224,675
Vanguard Portfolio Management LLC Index funds	−199K Sold out	0	—
Caitong International Asset Management Co., Ltd	−196K Sold out	0	—
Simplex Trading, LLC	−190K −62.5%	114K	$82,239
Imc-Chicago, LLC	−107K −69.7%	47K	$33,748
Xtx Topco Ltd	−95K Sold out	0	—
Morgan Stanley	−86K −19.1%	367K	$264,434
Centiva Capital, LP Hedge fund	−86K Sold out	0	—
Bank Of New York Mellon Corp	−83K Sold out	0	—
Prelude Capital Management, LLC	−73K Sold out	0	—
Charles Schwab Investment Management Inc Index funds	−70K Sold out	0	—
Northern Trust Corp Index funds	−65K −27.1%	175K	$126,139
Cetera Investment Advisers	−59K −72.8%	22K	$15,926

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Value
Hudson Bay Capital Management LP Hedge fund	−1.5M Sold out	—
Castleknight Management LP Hedge fund	−1.1M Sold out	—
Centiva Capital, LP Hedge fund	−86K Sold out	—
Citadel Advisors LLC Hedge fund	−56K Sold out	—
Bluecrest Capital Management Ltd Hedge fund	−50K Sold out	—
Alliancebernstein L.P. Active manager	−39K Sold out	—
American Century Companies Inc Active manager	−26K Sold out	—
Price T Rowe Associates Inc Active manager	−13K Sold out	—
Quantbot Technologies LP Hedge fund	−1,228 Sold out	—

New positions

largest by value

Institution	Shares	Value June 30, 2026
Millennium Management LLCHedge fund	526K	$379,420
Fore Capital, LLC	315K	$227,273
Transcend Capital Advisors, LLC	267K	$192,663
Marex Group Ltd	250K	$180,493
HSBC Holdings PLC	227K	$154,435
Marshall Wace, LLPHedge fund	178K	$127,854
Bluefin Capital Management, LLC	161K	$115,801
Two Sigma Securities, LLC	106K	$76,571
Sankala Group LLC	120K	$72,336
Cerity Partners LLC	76K	$54,949

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Hudson Bay Capital Management LPHedge fund	1.5M	$3.1M
Castleknight Management LPHedge fund	1.1M	$2.2M
Diametric Capital, LP	482K	$977,848
Vanguard Portfolio Management LLCIndex funds	199K	$403,948
Caitong International Asset Management Co., Ltd	196K	$397,192
Xtx Topco Ltd	95K	$193,335
Centiva Capital, LPHedge fund	86K	$173,991
Bank Of New York Mellon Corp	83K	$167,556
Prelude Capital Management, LLC	73K	$148,827
Charles Schwab Investment Management IncIndex funds	70K	$141,371

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 110
Ten largest holders: 63.7%
Index fund managers: 28.0%
Active managers and hedge funds: 24.1%

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	10	9	5	9	+1.3M	+36.7%
Index fund managers	3	7	1	3	−304K	−5.3%
Other institutions	56	48	25	27	+508K	+5.8%

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 Prairie Operating.

Only managers that filed a holdings report for both quarters are compared (148 here). 3 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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