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Institutional Ownership · SEC Form 13F

Who owns Ategrity Specialty Holdings (ASIC)


Which tracked institutional funds hold ASIC, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See ASIC company fundamentals →

Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

80
Institutional holders
5M
Shares held (tracked funds)
10.1%
Of shares outstanding

How the tape is positioned

19 tracked funds added or opened ASIC while 11 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.

A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.

Conviction spread

ASIC’s largest tracked holder by dollar value, Nuveen, LLC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.

Book-share is each fund’s reported value in ASIC divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.

Institutional & insider positioning

Between 2026-Q1 and 2026-Q2, across 80 tracked filers holding ASIC, 43 increased or opened the position and 41 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.

This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.

New buyers & exits

Funds opening or closing a position in ASIC between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.

Full exits 5

  • T. Rowe Price Investment Management, Inc.$11M
  • JANE STREET GROUP, LLC$2M
  • Ghisallo Capital Management LLC$2M
  • BALYASNY ASSET MANAGEMENT L.P.$2M
  • Interval Partners, LP$813K

Largest adds

  • PRICE T ROWE ASSOCIATES INC /MD/$4M
  • BlackRock, Inc.$4M
  • Nuveen, LLC$3M
  • VANGUARD CAPITAL MANAGEMENT LLC$2M
  • CANNELL CAPITAL LLC$2M
  • GEODE CAPITAL MANAGEMENT, LLC$1M

Largest trims

  • MILLENNIUM MANAGEMENT LLC$2M
  • GOLDMAN SACHS GROUP INC$1M
  • CITADEL ADVISORS LLC$1M
  • BANK OF AMERICA CORP /DE/$899K
  • MARSHALL WACE, LLP$672K
  • Walleye Capital LLC$554K

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).

FundSharesReported value% of valueQuarter
Nuveen, LLC added724,481$17M9.6%2026-Q2
BlackRock, Inc. added614,785$15M8.1%2026-Q2
CANNELL CAPITAL LLC added490,482$12M6.5%2026-Q2
VANGUARD CAPITAL MANAGEMENT LLC added391,457$9M5.2%2026-Q2
PRICE T ROWE ASSOCIATES INC /MD/ added375,677$9M5.0%2026-Q2
GEODE CAPITAL MANAGEMENT, LLC added202,149$5M2.7%2026-Q2
STATE STREET CORP added153,268$4M2.0%2026-Q2
MARSHALL WACE, LLP trimmed137,039$3M1.8%2026-Q2
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP131,785$3M1.7%2026-Q2
STATE OF WISCONSIN INVESTMENT BOARD trimmed129,266$3M1.7%2026-Q2
TWO SIGMA INVESTMENTS, LP trimmed128,737$3M1.7%2026-Q2
PRUDENTIAL FINANCIAL INC added89,180$2M1.2%2026-Q2
NORTHERN TRUST CORP added87,197$2M1.2%2026-Q2
JPMORGAN CHASE & CO added79,120$2M1.1%2026-Q2
VANGUARD PORTFOLIO MANAGEMENT LLC added74,577$2M1.0%2026-Q2
MORGAN STANLEY trimmed74,295$2M1.0%2026-Q2
Alyeska Investment Group, L.P.71,903$2M1.0%2026-Q2
CHARLES SCHWAB INVESTMENT MANAGEMENT INC added54,310$1M0.7%2026-Q2
GOLDMAN SACHS GROUP INC trimmed53,553$1M0.7%2026-Q2
KORNITZER CAPITAL MANAGEMENT INC /KS trimmed52,705$1M0.7%2026-Q2
RENAISSANCE TECHNOLOGIES LLC added49,200$1M0.7%2026-Q2
VANGUARD FIDUCIARY TRUST CO added46,901$1M0.6%2026-Q2
BANK OF AMERICA CORP /DE/ trimmed46,199$1M0.6%2026-Q2
Allworth Financial LP added45,644$1M0.6%2026-Q2
BNP PARIBAS FINANCIAL MARKETS added41,352$994K0.5%2026-Q2
LOS ANGELES CAPITAL MANAGEMENT LLC added40,585$976K0.5%2026-Q2
Trexquant Investment LP trimmed38,481$925K0.5%2026-Q2
CITADEL ADVISORS LLC trimmed35,255$848K0.5%2026-Q2
XTX Topco Ltd added33,093$796K0.4%2026-Q2
D. E. Shaw & Co., Inc. added30,871$742K0.4%2026-Q2
STRS OHIO added30,200$726K0.4%2026-Q2
Centiva Capital, LP trimmed29,682$714K0.4%2026-Q2
MILLENNIUM MANAGEMENT LLC trimmed28,469$684K0.4%2026-Q2
WELLS FARGO & COMPANY/MN added26,902$647K0.4%2026-Q2
Walleye Capital LLC trimmed24,158$581K0.3%2026-Q2
Bank of New York Mellon Corp added21,533$518K0.3%2026-Q2
UBS Group AG trimmed17,042$410K0.2%2026-Q2
ProCore Advisors, LLC added16,406$394K0.2%2026-Q2
Yorktown Management & Research Co Inc new14,650$352K0.2%2026-Q2
AQR CAPITAL MANAGEMENT LLC added14,569$350K0.2%2026-Q2
AMERICAN CENTURY COMPANIES INC trimmed13,584$327K0.2%2026-Q2
BARCLAYS PLC trimmed13,257$319K0.2%2026-Q2
Point72 Asset Management, L.P. trimmed10,078$242K0.1%2026-Q2
RHUMBLINE ADVISERS added9,300$224K0.1%2026-Q2
DEUTSCHE BANK AG\ added9,075$218K0.1%2026-Q2
EMERALD MUTUAL FUND ADVISERS TRUST7,410$178K0.1%2026-Q2
MetLife Investment Management, LLC5,402$130K0.1%2026-Q2
CITIGROUP INC added5,313$128K0.1%2026-Q2
Russell Investments Group, Ltd. added4,293$103K0.1%2026-Q2
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed4,288$103K0.1%2026-Q2
Vanguard Global Advisers, LLC3,146$76K0.0%2026-Q2
EMERALD ADVISERS, LLC3,072$74K0.0%2026-Q2
NEW YORK STATE COMMON RETIREMENT FUND added2,300$55K0.0%2026-Q2
Police & Firemen's Retirement System of New Jersey1,940$47K0.0%2026-Q2
FMR LLC trimmed1,808$43K0.0%2026-Q2
ROYAL BANK OF CANADA added1,762$42K0.0%2026-Q2
Tower Research Capital LLC (TRC) trimmed1,702$41K0.0%2026-Q2
Ameritas Investment Partners, Inc. added840$20K0.0%2026-Q2
Legal & General Group Plc795$19K0.0%2026-Q2
GAMMA Investing LLC trimmed483$12K0.0%2026-Q2
Quarry LP trimmed256$6K0.0%2026-Q2
Arax Advisory Partners added227$5K0.0%2026-Q2
Sterling Capital Management LLC trimmed188$5K0.0%2026-Q2
Farther Finance Advisors, LLC added163$4K0.0%2026-Q2
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed128$3K0.0%2026-Q2
Private Wealth Management Group, LLC trimmed97$2K0.0%2026-Q2
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC68$2K0.0%2026-Q2
Aster Capital Management (DIFC) Ltd added64$2K0.0%2026-Q2
Integrated Wealth Concepts LLC new36$8640.0%2026-Q2
SJS Investment Consulting Inc. new25$6010.0%2026-Q2
Asset Dedication, LLC new25$6010.0%2026-Q2
Caitong International Asset Management Co., Ltd trimmed19$4570.0%2026-Q2
JONES FINANCIAL COMPANIES LLLP new18$4260.0%2026-Q2
Pinnacle Wealth Planning Services, Inc.15$3610.0%2026-Q2
EverSource Wealth Advisors, LLC trimmed15$3600.0%2026-Q2
ROTHSCHILD INVESTMENT LLC added11$2640.0%2026-Q2
IFP Advisors, Inc added7$1680.0%2026-Q2
Clearstead Advisors, LLC new5$1220.0%2026-Q2
Essential Partners LLC5$1200.0%2026-Q2
NISA INVESTMENT ADVISORS, LLC1$240.0%2026-Q2
T. Rowe Price Investment Management, Inc. added569,734$11M6.2%2026-Q1 stale (1 quarter behind)
JANE STREET GROUP, LLC added102,864$2M1.1%2026-Q1 stale (1 quarter behind)
Ghisallo Capital Management LLC100,000$2M1.1%2026-Q1 stale (1 quarter behind)
BALYASNY ASSET MANAGEMENT L.P. trimmed94,471$2M1.0%2026-Q1 stale (1 quarter behind)
Interval Partners, LP trimmed41,101$813K0.4%2026-Q1 stale (1 quarter behind)
BAMCO INC /NY/ trimmed669,792$14M7.8%2025-Q4 stale (2 quarters behind)
VANGUARD GROUP INC added457,200$10M5.3%2025-Q4 stale (2 quarters behind)
NEXT CENTURY GROWTH INVESTORS LLC trimmed143,657$3M1.7%2025-Q4 stale (2 quarters behind)
NORGES BANK40,000$840K0.5%2025-Q4 stale (2 quarters behind)
Driehaus Capital Management LLC added381,830$8M4.2%2025-Q3 stale (3 quarters behind)
ADAGE CAPITAL PARTNERS GP, L.L.C. trimmed150,000$3M1.6%2025-Q3 stale (3 quarters behind)
Jain Global LLC trimmed68,000$1M0.7%2025-Q3 stale (3 quarters behind)
Calamos Advisors LLC new27,949$553K0.3%2025-Q3 stale (3 quarters behind)
Engle Capital Management, L.P. new91,000$2M1.1%2025-Q2 stale (4 quarters behind)
DISCOVERY CAPITAL MANAGEMENT, LLC / CT new50,000$1M0.6%2025-Q2 stale (4 quarters behind)
Third Point LLC new50,000$1M0.6%2025-Q2 stale (4 quarters behind)
WEXFORD CAPITAL LP new50,000$1M0.6%2025-Q2 stale (4 quarters behind)
FEDERATED HERMES, INC. new30,000$646K0.4%2025-Q2 stale (4 quarters behind)
Squarepoint Ops LLC new29,602$637K0.4%2025-Q2 stale (4 quarters behind)
Limestone Investment Advisors LP new25,000$538K0.3%2025-Q2 stale (4 quarters behind)

Ownership over time

Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.

HoldersTotal shares

Reading this table

Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.

About 13F filings

A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.

Learn how to read institutional ownership