Who owns MTNE
Which tracked institutional funds hold MTNE, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MTNE 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.
Conviction spread
MTNE’s largest tracked holder by dollar value, ADAGE CAPITAL PARTNERS GP, L.L.C., sizes it at 0.0% 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 MTNE more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in MTNE 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
Only one quarter (2026-Q2) of 13F history is available — a quarter-over-quarter accumulation delta needs two.
We do not publish a positioning read for a window we cannot measure honestly. A starting question, not a verdict.
Institutional holders
One row per tracked fund, most shares held first (every row is from one quarter; reported value breaks ties). “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. new | 1,800,000 | $18M | 9.3% | 2026-Q2 |
| HGC Investment Management Inc. new | 1,250,000 | $13M | 6.6% | 2026-Q2 |
| Sculptor Capital LP new | 1,150,506 | $11M | 6.0% | 2026-Q2 |
| Linden Advisors LP new | 1,150,000 | $11M | 6.0% | 2026-Q2 |
| Magnetar Financial LLC new | 1,100,000 | $11M | 5.7% | 2026-Q2 |
| Alberta Investment Management Corp new | 1,000,000 | $10M | 5.3% | 2026-Q2 |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND new | 980,000 | $10M | 5.2% | 2026-Q2 |
| Polar Asset Management Partners Inc. new | 905,000 | $9M | 4.7% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC new | 850,000 | $9M | 4.5% | 2026-Q2 |
| AQR Arbitrage LLC new | 842,030 | $8M | 4.4% | 2026-Q2 |
| Shaolin Capital Management LLC new | 806,940 | $8M | 4.3% | 2026-Q2 |
| HEIGHTS CAPITAL MANAGEMENT, INC new | 800,000 | $8M | 4.1% | 2026-Q2 |
| Radcliffe Capital Management, L.P. new | 798,500 | $8M | 4.2% | 2026-Q2 |
| HBK INVESTMENTS L P new | 600,000 | $6M | 3.1% | 2026-Q2 |
| Hudson Bay Capital Management LP new | 500,000 | $5M | 2.6% | 2026-Q2 |
| MOORE CAPITAL MANAGEMENT, LP new | 500,000 | $5M | 2.6% | 2026-Q2 |
| Schonfeld Strategic Advisors LLC new | 391,548 | $4M | 2.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP new | 362,500 | $4M | 1.9% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS new | 307,970 | $3M | 1.6% | 2026-Q2 |
| PICTON MAHONEY ASSET MANAGEMENT new | 300,000 | $3M | 1.6% | 2026-Q2 |
| Ghisallo Capital Management LLC new | 300,000 | $3M | 1.6% | 2026-Q2 |
| BERKLEY W R CORP new | 297,960 | $3M | 1.5% | 2026-Q2 |
| TORONTO DOMINION BANK new | 250,000 | $3M | 1.3% | 2026-Q2 |
| K2 PRINCIPAL FUND, L.P. new | 227,188 | $2M | 1.2% | 2026-Q2 |
| Periscope Capital Inc. new | 224,800 | $2M | 1.2% | 2026-Q2 |
| JPMORGAN CHASE & CO new | 210,390 | $2M | 1.1% | 2026-Q2 |
| Lineage Point Capital LP new | 200,000 | $2M | 1.1% | 2026-Q2 |
| Calamos Advisors LLC new | 200,000 | $2M | 1.1% | 2026-Q2 |
| Governors Lane LP new | 200,000 | $2M | 1.0% | 2026-Q2 |
| Clear Street Group Inc. new | 183,374 | $2M | 1.0% | 2026-Q2 |
| DELTEC ASSET MANAGEMENT LLC new | 100,000 | $1M | 0.5% | 2026-Q2 |
| DLD Asset Management, LP new | 100,000 | $1M | 0.5% | 2026-Q2 |
| WHITEBOX ADVISORS LLC new | 100,000 | $985K | 0.5% | 2026-Q2 |
| StoneX Group Inc. new | 54,988 | $551K | 0.3% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC new | 43,275 | $434K | 0.2% | 2026-Q2 |
| Verition Fund Management LLC new | 32,966 | $11K | 0.0% | 2026-Q2 |
| ARISTEIA CAPITAL, L.L.C. new | 30,000 | $301K | 0.2% | 2026-Q2 |
| Quarry LP new | 19,532 | $196K | 0.1% | 2026-Q2 |
| Parallax Volatility Advisers, L.P. new | 12,550 | $4K | 0.0% | 2026-Q2 |
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.