Who owns JACS
Which tracked institutional funds hold JACS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See JACS company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-08-14). 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
The tracked-fund tape on JACS is one-sided between 2026-Q1 and 2026-Q2: 3 added or opened and 9 trimmed or exited — on balance reducing.
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
JACS’s largest tracked holder by dollar value, Hudson Bay Capital Management LP, sizes it at 0.1% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.0pp gap the other way — the median holder sizes JACS more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in JACS 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 44 tracked filers holding JACS, 9 increased or opened the position and 15 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 JACS 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
- METEORA CAPITAL, LLC$13M
- GLAZER CAPITAL, LLC$13M
- Mint Tower Capital Management B.V.$7M
- TENOR CAPITAL MANAGEMENT Co., L.P.$6M
- TORONTO DOMINION BANK$4M
Largest adds
- HIGHBRIDGE CAPITAL MANAGEMENT LLC$8M
- BERKLEY W R CORP$5M
- Periscope Capital Inc.$561K
Largest trims
- Bulldog Investors, LLP$2M
- Shaolin Capital Management LLC$1M
- JPMORGAN CHASE & CO$753K
- GABELLI FUNDS LLC$258K
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 |
|---|---|---|---|---|
| Hudson Bay Capital Management LP | 1,520,505 | $16M | 6.4% | 2026-Q2 |
| Westchester Capital Management, LLC | 1,186,200 | $13M | 5.0% | 2026-Q2 |
| AQR Arbitrage LLC added | 1,167,626 | $12M | 4.9% | 2026-Q2 |
| Linden Advisors LP | 1,150,000 | $12M | 4.9% | 2026-Q2 |
| D. E. Shaw & Co., Inc. | 1,138,500 | $12M | 4.8% | 2026-Q2 |
| WOLVERINE ASSET MANAGEMENT LLC trimmed | 1,048,131 | $11M | 4.4% | 2026-Q2 |
| Polar Asset Management Partners Inc. | 1,025,000 | $11M | 4.3% | 2026-Q2 |
| BERKLEY W R CORP added | 927,836 | $10M | 3.9% | 2026-Q2 |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC added | 867,662 | $9M | 3.7% | 2026-Q2 |
| MIZUHO SECURITIES USA LLC | 714,774 | $7M | 3.0% | 2026-Q2 |
| HEIGHTS CAPITAL MANAGEMENT, INC | 700,000 | $7M | 3.0% | 2026-Q2 |
| Radcliffe Capital Management, L.P. | 675,001 | $7M | 2.9% | 2026-Q2 |
| Magnetar Financial LLC | 600,000 | $6M | 2.5% | 2026-Q2 |
| First Trust Capital Management L.P. | 562,500 | $6M | 2.4% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP | 474,821 | $5M | 2.0% | 2026-Q2 |
| LMR Partners LLP | 443,751 | $5M | 1.9% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT | 400,000 | $4M | 1.7% | 2026-Q2 |
| Wealthspring Capital LLC trimmed | 397,783 | $4M | 1.7% | 2026-Q2 |
| Verition Fund Management LLC added | 375,946 | $4M | 1.6% | 2026-Q2 |
| Periscope Capital Inc. added | 375,000 | $4M | 1.6% | 2026-Q2 |
| RIVERNORTH CAPITAL MANAGEMENT, LLC trimmed | 359,329 | $4M | 1.5% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC | 360,208 | $4M | 1.5% | 2026-Q2 |
| Crossingbridge Advisors, LLC trimmed | 312,381 | $3M | 1.3% | 2026-Q2 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 300,000 | $3M | 1.3% | 2026-Q2 |
| MANGROVE PARTNERS IM, LLC | 280,470 | $3M | 1.2% | 2026-Q2 |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 220,100 | $2M | 0.9% | 2026-Q2 |
| SONA ASSET MANAGEMENT (US) LLC | 206,468 | $2M | 0.9% | 2026-Q2 |
| Bulldog Investors, LLP trimmed | 192,029 | $2M | 0.8% | 2026-Q2 |
| WHITEBOX ADVISORS LLC | 175,000 | $2M | 0.7% | 2026-Q2 |
| Yakira Capital Management, Inc. | 147,541 | $2M | 0.6% | 2026-Q2 |
| Shaolin Capital Management LLC trimmed | 133,696 | $1M | 0.6% | 2026-Q2 |
| GABELLI FUNDS LLC trimmed | 129,900 | $1M | 0.5% | 2026-Q2 |
| O'Connor Alternative Investments LLC | 100,000 | $1M | 0.4% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 50,229 | $534K | 0.2% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 50,000 | $532K | 0.2% | 2026-Q2 |
| READYSTATE ASSET MANAGEMENT LP | 50,000 | $532K | 0.2% | 2026-Q2 |
| DELTEC ASSET MANAGEMENT LLC | 40,000 | $426K | 0.2% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 33,259 | $354K | 0.1% | 2026-Q2 |
| HGC Investment Management Inc. | 25,000 | $266K | 0.1% | 2026-Q2 |
| StoneX Group Inc. trimmed | 15,017 | $160K | 0.1% | 2026-Q2 |
| ABC ARBITRAGE SA | 15,000 | $160K | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP new | 12,640 | $134K | 0.1% | 2026-Q2 |
| Clear Street Group Inc. trimmed | 7,200 | $77K | 0.0% | 2026-Q2 |
| Arax Advisory Partners new | 2,750 | $29K | 0.0% | 2026-Q2 |
| METEORA CAPITAL, LLC added | 1,219,744 | $13M | 5.1% | 2026-Q1 stale (1 quarter behind) |
| GLAZER CAPITAL, LLC trimmed | 1,195,650 | $13M | 5.0% | 2026-Q1 stale (1 quarter behind) |
| Mint Tower Capital Management B.V. | 650,000 | $7M | 2.7% | 2026-Q1 stale (1 quarter behind) |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 600,000 | $6M | 2.5% | 2026-Q1 stale (1 quarter behind) |
| TORONTO DOMINION BANK trimmed | 400,000 | $4M | 1.7% | 2026-Q1 stale (1 quarter behind) |
| CSS LLC/IL new | 35,424 | $375K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| BCK Capital Management LP added | 103,311 | $1M | 0.4% | 2025-Q3 stale (3 quarters behind) |
| CANTOR FITZGERALD, L. P. new | 87,630 | $910K | 0.4% | 2025-Q3 stale (3 quarters behind) |
| Centiva Capital, LP added | 387,912 | $4M | 1.6% | 2025-Q2 stale (4 quarters behind) |
| Virtu Financial LLC new | 28,407 | $293K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| CLEAR STREET LLC new | 8,000 | $82K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
1 parent filing withheld from the table above, and from the coverage figures, to avoid listing one book twice: OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) (last filed 2025-Q4, 100,000 shares) reconciles to its 1 current affiliate (100,000 shares) — 0.000% apart.
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.