Ategrity Specialty Insurance Co Holdings: which funds bought and sold

Institutions that bought and sold Ategrity Specialty Insurance Co Holdings 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, 45 institutions that filed 13F reports for both quarters added to or opened positions in Ategrity Specialty Insurance Co Holdings, and 36 cut or closed them. Together they sold a net 411K shares, −7.0% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 392K shares (−18.4%); index fund managers were net buyers of 148K shares (+10.0%). 10 opened a new position and 11 sold out entirely.

Bought, Q2 2026 45 institutions, 10 of them new holders Sold, Q2 2026 36 institutions, 11 of them sold out

Net change, all compared −411K shares (−7.0%)

Net change, active managers −392K shares (−18.4%), 6 bought, 14 sold

Buyers versus sellers

institutions compared, 95

45 bought 14 36 sold

Active managers and hedge funds 6 bought · 14 sold · −392K

Index fund managers 9 bought · 0 sold · +148K

Other institutions 30 bought · 22 sold · −166K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Price T Rowe Associates Inc Active manager	+101K +36.8%	376K	$9M
Blackrock, Inc. Index funds	+48K +8.4%	615K	$14.8M
Allworth Financial LP	+46K +380266.7%	46K	$1.1M
Los Angeles Capital Management LLC Active manager	+35K +626.0%	41K	$975,664
Vanguard Capital Management LLC Index funds	+33K +9.3%	391K	$9.4M
Northern Trust Corp Index funds	+24K +37.5%	87K	$2.1M
State Street Corp Index funds	+17K +12.5%	153K	$3.7M
Yorktown Management & Research Co Inc	+15K New position	15K	$352,186
Prudential Financial Inc	+15K +19.6%	89K	$2.1M
Geode Capital Management, LLC Index funds	+14K +7.4%	202K	$4.9M
Janney Montgomery Scott LLC	+13K New position	13K	$311,000
Nuveen, LLC	+12K +1.7%	724K	$17.4M
Xtx Topco Ltd	+8,451 +34.3%	33K	$795,556
Renaissance Technologies LLC Hedge fund	+7,600 +18.3%	49K	$1.2M
Deutsche Bank Ag\	+6,082 +203.2%	9,075	$218,163
Bank Of New York Mellon Corp	+5,753 +36.5%	22K	$517,653
Vanguard Portfolio Management LLC Index funds	+5,141 +7.4%	75K	$1.8M
Citigroup Inc	+4,867 +1091.3%	5,313	$127,724
Cannell Capital LLC	+3,978 +0.8%	490K	$11.8M
AQR Capital Management LLC Hedge fund	+3,832 +35.7%	15K	$350,240

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Price T Rowe Associates Inc Active manager	+101K +36.8%	376K	$9M
Los Angeles Capital Management LLC Active manager	+35K +626.0%	41K	$975,664
Renaissance Technologies LLC Hedge fund	+7,600 +18.3%	49K	$1.2M
AQR Capital Management LLC Hedge fund	+3,832 +35.7%	15K	$350,240
T. Rowe Price Investment Management, Inc. Active manager	+3,465 +0.6%	573K	$13.8M
D. E. Shaw & Co., Inc. Hedge fund	+3,392 +12.3%	31K	$742,139

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Jane Street Group, LLC	−103K Sold out	0	—
Ghisallo Capital Management LLC Hedge fund	−100K Sold out	0	—
Millennium Management LLC Hedge fund	−98K −77.5%	28K	$684,395
Balyasny Asset Management L.P. Hedge fund	−94K Sold out	0	—
Goldman Sachs Group Inc	−78K −59.3%	54K	$1.3M
Marshall Wace, LLP Hedge fund	−64K −31.7%	137K	$3.3M
Citadel Advisors LLC Hedge fund	−61K −63.3%	35K	$847,530
Bank Of America Corp	−55K −54.5%	46K	$1.1M
Interval Partners, LP Hedge fund	−41K Sold out	0	—
Walleye Capital LLC Hedge fund	−33K −57.9%	24K	$580,758
Two Sigma Investments, LP Hedge fund	−29K −18.6%	129K	$3.1M
State Of Wyoming	−21K Sold out	0	—
State Of Wisconsin Investment Board	−14K −9.8%	129K	$3.1M
Varcov Co.	−13K Sold out	0	—
Trexquant Investment LP Hedge fund	−12K −24.3%	38K	$925,083
Morgan Stanley	−9,711 −11.6%	74K	$1.8M
HRT Financial LP	−7,902 −36.4%	14K	$331,000
Point72 Asset Management, L.P. Hedge fund	−7,895 −43.9%	10K	$242,275
UBS Group AG	−5,205 −23.4%	17K	$409,690
Aquatic Capital Management LLC	−4,514 Sold out	0	—

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Ghisallo Capital Management LLC Hedge fund	−100K Sold out	0	—
Millennium Management LLC Hedge fund	−98K −77.5%	28K	$684,395
Balyasny Asset Management L.P. Hedge fund	−94K Sold out	0	—
Marshall Wace, LLP Hedge fund	−64K −31.7%	137K	$3.3M
Citadel Advisors LLC Hedge fund	−61K −63.3%	35K	$847,530
Interval Partners, LP Hedge fund	−41K Sold out	0	—
Walleye Capital LLC Hedge fund	−33K −57.9%	24K	$580,758
Two Sigma Investments, LP Hedge fund	−29K −18.6%	129K	$3.1M
Trexquant Investment LP Hedge fund	−12K −24.3%	38K	$925,083
Point72 Asset Management, L.P. Hedge fund	−7,895 −43.9%	10K	$242,275

New positions

largest by value

Institution	Shares	Value June 30, 2026
Yorktown Management & Research Co Inc	15K	$352,186
Janney Montgomery Scott LLC	13K	$311,000
Royal Bank Of Canada	1,762	$42,000
Quarry LP	256	$6,154
Aster Capital Management (Difc) Ltd	64	$1,539
Integrated Wealth Concepts LLC	36	$864
Asset Dedication, LLC	25	$601
Sjs Investment Consulting Inc.	25	$601
Jones Financial Companies LLLP	18	$426
Clearstead Advisors, LLC	5	$122

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Jane Street Group, LLC	103K	$2M
Ghisallo Capital Management LLCHedge fund	100K	$2M
Balyasny Asset Management L.P.Hedge fund	94K	$1.9M
Interval Partners, LPHedge fund	41K	$812,567
State Of Wyoming	21K	$416,771
Varcov Co.	13K	$266,341
Aquatic Capital Management LLC	4,514	$89,242
Root Financial Partners, LLC	18	$356
Mai Capital Management	5	$99
Freestone Grove Partners LPHedge fund	3	$59

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 84
Ten largest holders: 69.6%
Index fund managers: 30.0%
Active managers and hedge funds: 31.8%

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	6	14	0	4	−392K	−18.4%
Index fund managers	9	0	0	0	+148K	+10.0%
Other institutions	30	22	10	7	−166K	−7.4%

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 Ategrity Specialty Insurance Co Holdings.

Only managers that filed a holdings report for both quarters are compared (95 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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