Who owns JENA
Which tracked institutional funds hold JENA, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See JENA 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
4 tracked funds added or opened JENA while 7 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
JENA’s largest tracked holder by dollar value, Linden Advisors LP, sizes it at 0.7% of its own reported 13F book, while the median holder sizes it at 0.1% of theirs — a 0.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in JENA 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 43 tracked filers holding JENA, 8 increased or opened the position and 10 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 JENA 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 1
- D. E. Shaw & Co., Inc.$5M
Full exits 6
- METEORA CAPITAL, LLC$11M
- TENOR CAPITAL MANAGEMENT Co., L.P.$10M
- GLAZER CAPITAL, LLC$9M
- Quarry LP$1M
- RLH Capital LLC$1M
- HighTower Advisors, LLC$511K
Largest adds
- Verition Fund Management LLC$1M
- Periscope Capital Inc.$519K
- Radcliffe Capital Management, L.P.$253K
Largest trims
- Shaolin Capital Management LLC$1M
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 |
|---|---|---|---|---|
| Linden Advisors LP | 1,550,000 | $16M | 7.3% | 2026-Q2 |
| Alberta Investment Management Corp | 1,000,000 | $10M | 4.7% | 2026-Q2 |
| Westchester Capital Management, LLC | 912,000 | $9M | 4.3% | 2026-Q2 |
| Magnetar Financial LLC | 900,000 | $9M | 4.2% | 2026-Q2 |
| Centiva Capital, LP | 885,341 | $9M | 4.2% | 2026-Q2 |
| Polar Asset Management Partners Inc. | 800,000 | $8M | 3.8% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP | 725,000 | $8M | 3.4% | 2026-Q2 |
| O'Connor Alternative Investments LLC | 700,000 | $7M | 3.3% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP | 700,000 | $7M | 3.3% | 2026-Q2 |
| HBK INVESTMENTS L P | 699,900 | $7M | 3.3% | 2026-Q2 |
| AQR Arbitrage LLC added | 682,598 | $7M | 3.2% | 2026-Q2 |
| Verition Fund Management LLC added | 660,938 | $7M | 3.1% | 2026-Q2 |
| Radcliffe Capital Management, L.P. added | 551,139 | $6M | 2.6% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT | 500,000 | $5M | 2.3% | 2026-Q2 |
| D. E. Shaw & Co., Inc. new | 475,100 | $5M | 2.2% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 450,000 | $5M | 2.1% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. | 450,000 | $5M | 2.1% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC | 441,500 | $5M | 2.1% | 2026-Q2 |
| Periscope Capital Inc. added | 425,000 | $4M | 2.0% | 2026-Q2 |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | 395,400 | $4M | 1.9% | 2026-Q2 |
| Shaolin Capital Management LLC trimmed | 358,111 | $4M | 1.7% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC added | 313,075 | $3M | 1.5% | 2026-Q2 |
| Hudson Bay Capital Management LP | 300,047 | $3M | 1.4% | 2026-Q2 |
| K2 PRINCIPAL FUND, L.P. | 273,000 | $3M | 1.3% | 2026-Q2 |
| SONA ASSET MANAGEMENT (US) LLC | 251,916 | $3M | 1.2% | 2026-Q2 |
| Lineage Point Capital LP | 250,000 | $3M | 1.2% | 2026-Q2 |
| BlueCrest Capital Management Ltd | 250,000 | $3M | 1.2% | 2026-Q2 |
| HGC Investment Management Inc. | 250,000 | $3M | 1.2% | 2026-Q2 |
| BERKLEY W R CORP | 247,850 | $3M | 1.2% | 2026-Q2 |
| First Trust Capital Management L.P. | 221,610 | $2M | 1.0% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC | 153,100 | $2M | 0.7% | 2026-Q2 |
| WHITEBOX ADVISORS LLC | 150,000 | $2M | 0.7% | 2026-Q2 |
| JPMORGAN CHASE & CO | 140,000 | $1M | 0.7% | 2026-Q2 |
| DLD Asset Management, LP | 102,384 | $1M | 0.5% | 2026-Q2 |
| DELTEC ASSET MANAGEMENT LLC | 100,000 | $1M | 0.5% | 2026-Q2 |
| GRITSTONE ASSET MANAGEMENT LLC | 98,857 | $1M | 0.5% | 2026-Q2 |
| Bulldog Investors, LLP trimmed | 94,050 | $974K | 0.4% | 2026-Q2 |
| Clear Street Group Inc. trimmed | 60,401 | $626K | 0.3% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS | 52,714 | $546K | 0.2% | 2026-Q2 |
| READYSTATE ASSET MANAGEMENT LP | 50,000 | $518K | 0.2% | 2026-Q2 |
| Governors Lane LP added | 46,395 | $481K | 0.2% | 2026-Q2 |
| CSS LLC/IL | 45,896 | $475K | 0.2% | 2026-Q2 |
| MIZUHO SECURITIES USA LLC trimmed | 28,006 | $290K | 0.1% | 2026-Q2 |
| METEORA CAPITAL, LLC added | 1,036,523 | $11M | 4.8% | 2026-Q1 stale (1 quarter behind) |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 1,000,000 | $10M | 4.6% | 2026-Q1 stale (1 quarter behind) |
| GLAZER CAPITAL, LLC added | 920,897 | $9M | 4.3% | 2026-Q1 stale (1 quarter behind) |
| RLH Capital LLC new | 100,000 | $1M | 0.5% | 2026-Q1 stale (1 quarter behind) |
| Quarry LP | 100,000 | $1M | 0.5% | 2026-Q1 stale (1 quarter behind) |
| HighTower Advisors, LLC trimmed | 50,000 | $511K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| Virtu Financial LLC added | 38,346 | $392K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| TORONTO DOMINION BANK trimmed | 260,900 | $3M | 1.2% | 2025-Q4 stale (2 quarters behind) |
| Wealthspring Capital LLC trimmed | 112,800 | $1M | 0.5% | 2025-Q4 stale (2 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, 700,000 shares) reconciles to its 1 current affiliate (700,000 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.