Who owns IACOU
Which tracked institutional funds hold IACOU, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See IACOU company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-17). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
9 tracked funds added or opened IACOU while 16 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
IACOU’s largest tracked holder by dollar value, Polar Asset Management Partners Inc., sizes it at 0.5% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.5pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in IACOU 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 69 tracked filers holding IACOU, 16 increased or opened the position and 34 reduced or closed it; over the same quarter, there were no open-market insider Form 4s.
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 IACOU 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.
New buyers 3
- BlueCrest Capital Management Ltd$5M
- MANGROVE PARTNERS IM, LLC$4M
- COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS$4M
Full exits 7
- TENOR CAPITAL MANAGEMENT Co., L.P.$8M
- GLAZER CAPITAL, LLC$7M
- Decagon Asset Management LLP$3M
- SYQUANT CAPITAL SAS$3M
- METEORA CAPITAL, LLC$2M
- HRT FINANCIAL LP$1M
Largest adds
- D. E. Shaw & Co., Inc.$12M
- WOLVERINE ASSET MANAGEMENT LLC$5M
- TORONTO DOMINION BANK$3M
- AQR Arbitrage LLC$480K
- Radcliffe Capital Management, L.P.$387K
- Polar Asset Management Partners Inc.$257K
Largest trims
- CANTOR FITZGERALD, L. P.$9M
- Saba Capital Management, L.P.$3M
- Sculptor Capital LP$3M
- K2 PRINCIPAL FUND, L.P.$1M
- Shaolin Capital Management LLC$1M
- ExodusPoint Capital Management, LP$980K
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).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Polar Asset Management Partners Inc. | 2,250,000 | $22M | 6.5% | 2026-Q2 |
| MMCAP International Inc. SPC | 1,750,000 | $17M | 5.1% | 2026-Q2 |
| Linden Advisors LP | 1,750,000 | $17M | 5.1% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. | 1,699,228 | $17M | 5.0% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 1,700,000 | $17M | 4.9% | 2026-Q2 |
| LMR Partners LLP | 1,500,000 | $15M | 4.4% | 2026-Q2 |
| D. E. Shaw & Co., Inc. added | 1,472,601 | $15M | 4.3% | 2026-Q2 |
| AQR Arbitrage LLC added | 1,447,895 | $14M | 4.2% | 2026-Q2 |
| Hudson Bay Capital Management LP trimmed | 1,256,541 | $12M | 3.6% | 2026-Q2 |
| Magnetar Financial LLC trimmed | 1,249,995 | $12M | 3.6% | 2026-Q2 |
| Lineage Point Capital LP added | 1,154,606 | $12M | 3.4% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC | 1,000,000 | $10M | 2.9% | 2026-Q2 |
| Calamos Advisors LLC | 900,000 | $9M | 2.6% | 2026-Q2 |
| HGC Investment Management Inc. added | 809,700 | $8M | 2.4% | 2026-Q2 |
| WHITEBOX ADVISORS LLC | 797,378 | $8M | 2.3% | 2026-Q2 |
| WOLVERINE ASSET MANAGEMENT LLC added | 762,908 | $8M | 2.2% | 2026-Q2 |
| OMERS ADMINISTRATION Corp | 750,000 | $8M | 2.2% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 585,300 | $6M | 1.7% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP | 583,593 | $6M | 1.7% | 2026-Q2 |
| BlueCrest Capital Management Ltd new | 509,174 | $5M | 1.5% | 2026-Q2 |
| SONA ASSET MANAGEMENT (US) LLC | 500,000 | $5M | 1.4% | 2026-Q2 |
| First Trust Capital Management L.P. trimmed | 499,998 | $5M | 1.4% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 466,774 | $5M | 1.4% | 2026-Q2 |
| MANGROVE PARTNERS IM, LLC new | 450,000 | $4M | 1.3% | 2026-Q2 |
| Radcliffe Capital Management, L.P. added | 400,036 | $4M | 1.2% | 2026-Q2 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS new | 399,999 | $4M | 1.2% | 2026-Q2 |
| TIG Advisors, LLC | 350,000 | $3M | 1.0% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC trimmed | 317,242 | $3M | 0.9% | 2026-Q2 |
| Qube Research & Technologies Ltd | 300,000 | $3M | 0.9% | 2026-Q2 |
| Ghisallo Capital Management LLC | 300,000 | $3M | 0.9% | 2026-Q2 |
| TORONTO DOMINION BANK added | 293,083 | $3M | 0.9% | 2026-Q2 |
| L1 Global Manager Pty Ltd | 250,000 | $2M | 0.7% | 2026-Q2 |
| PEAK6 LLC trimmed | 249,999 | $2M | 0.7% | 2026-Q2 |
| Alberta Investment Management Corp | 250,000 | $2M | 0.7% | 2026-Q2 |
| Periscope Capital Inc. trimmed | 249,600 | $2M | 0.7% | 2026-Q2 |
| Kryger Capital LLC trimmed | 247,547 | $2M | 0.7% | 2026-Q2 |
| Context Capital Management, LLC | 200,000 | $2M | 0.6% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP | 200,000 | $2M | 0.6% | 2026-Q2 |
| Wealthspring Capital LLC trimmed | 190,827 | $2M | 0.6% | 2026-Q2 |
| Parallax Volatility Advisers, L.P. | 166,750 | $2M | 0.5% | 2026-Q2 |
| Westchester Capital Management, LLC | 150,000 | $2M | 0.4% | 2026-Q2 |
| Clear Street Group Inc. trimmed | 151,390 | $2M | 0.4% | 2026-Q2 |
| DLD Asset Management, LP | 150,000 | $1M | 0.4% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT trimmed | 149,994 | $1M | 0.4% | 2026-Q2 |
| CANTOR FITZGERALD, L. P. trimmed | 130,000 | $1M | 0.4% | 2026-Q2 |
| BERKLEY W R CORP trimmed | 104,613 | $1M | 0.3% | 2026-Q2 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC trimmed | 99,999 | $996K | 0.3% | 2026-Q2 |
| CSS LLC/IL trimmed | 100,134 | $992K | 0.3% | 2026-Q2 |
| HEIGHTS CAPITAL MANAGEMENT, INC | 95,000 | $940K | 0.3% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD | 77,100 | $764K | 0.2% | 2026-Q2 |
| StoneX Group Inc. trimmed | 75,992 | $750K | 0.2% | 2026-Q2 |
| HBK INVESTMENTS L P added | 72,870 | $722K | 0.2% | 2026-Q2 |
| PRELUDE CAPITAL MANAGEMENT, LLC | 55,000 | $551K | 0.2% | 2026-Q2 |
| Stoic Point Capital Management LLC | 55,000 | $551K | 0.2% | 2026-Q2 |
| DELTEC ASSET MANAGEMENT LLC trimmed | 49,950 | $495K | 0.1% | 2026-Q2 |
| Logan Stone Capital, LLC new | 42,529 | $421K | 0.1% | 2026-Q2 |
| ABC ARBITRAGE SA | 40,000 | $396K | 0.1% | 2026-Q2 |
| PenderFund Capital Management Ltd. added | 35,000 | $346K | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 30,000 | $302K | 0.1% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC trimmed | 14,345 | $142K | 0.0% | 2026-Q2 |
| UBS Group AG new | 13,429 | $133K | 0.0% | 2026-Q2 |
| Saba Capital Management, L.P. trimmed | 116,666 | $37K | 0.0% | 2026-Q2 |
| Sculptor Capital LP trimmed | 100,000 | $32K | 0.0% | 2026-Q2 |
| Shaolin Capital Management LLC trimmed | 47,910 | $16K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA trimmed | 1,173 | $12K | 0.0% | 2026-Q2 |
| Galaxy Digital Inc. trimmed | 33,333 | $11K | 0.0% | 2026-Q2 |
| ExodusPoint Capital Management, LP trimmed | 33,333 | $11K | 0.0% | 2026-Q2 |
| K2 PRINCIPAL FUND, L.P. trimmed | 32,443 | $11K | 0.0% | 2026-Q2 |
| MORGAN STANLEY new | 25 | $248 | 0.0% | 2026-Q2 |
| TENOR CAPITAL MANAGEMENT Co., L.P. new | 800,000 | $8M | 2.3% | 2026-Q1 stale (1 quarter behind) |
| GLAZER CAPITAL, LLC new | 700,000 | $7M | 2.0% | 2026-Q1 stale (1 quarter behind) |
| Decagon Asset Management LLP new | 318,350 | $3M | 0.9% | 2026-Q1 stale (1 quarter behind) |
| SYQUANT CAPITAL SAS new | 300,000 | $3M | 0.9% | 2026-Q1 stale (1 quarter behind) |
| METEORA CAPITAL, LLC new | 152,103 | $2M | 0.4% | 2026-Q1 stale (1 quarter behind) |
| HRT FINANCIAL LP new | 150,000 | $1M | 0.4% | 2026-Q1 stale (1 quarter behind) |
| Virtu Financial LLC new | 110,161 | $1M | 0.3% | 2026-Q1 stale (1 quarter behind) |
| Paloma Partners Management Co new | 24,993 | $248K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| ROBINSON CAPITAL MANAGEMENT, LLC new | 10,250 | $102K | 0.0% | 2026-Q1 stale (1 quarter 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.
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.