ONE Nuclear Energy Inc. (ONEN) — Institutional Holders, Q2 2026
68 institutional investment managers reported a ONEN position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $203.3M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
ONEN in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- MIZUHO SECURITIES USAAdded · +421,750 sh+$2.3M
- GLAZER CAPITALAdded · +300,084 sh+$1.6M
- BERKLEY W RAdded · +219,214 sh+$1.2M
- SkyView Investment AdvisorsNew · +201,320 sh+$1.1M
- Wealthspring CapitalAdded · +184,085 sh+$1.0M
Biggest sellers
- Aventail Capital GroupSold out · -1,452,081 sh-$7.9M
- TORONTO DOMINION BANKTrimmed · -82,344 sh-$447.6K
- PERISCOPE CAPITALTrimmed · -52,433 sh-$285.0K
- Schonfeld Strategic AdvisorsSold out · -42,913 sh-$233.3K
- AQR ArbitrageTrimmed · -31,591 sh-$171.7K
ONEN 13F holders ranked 1–68 of 68
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | HIGHBRIDGE CAPITAL MANAGEMENT#1 · 1,690,479 sh | 1,690,479 | $17.6M | 0.43% | +1.7% |
| 2 | TENOR CAPITAL MANAGEMENT , L.P.#2 · 3,000,000 sh | 3,000,000 | $16.3M | 0.23% | 0.0% |
| 3 | LINDEN ADVISORS#3 · 2,907,464 sh | 2,907,464 | $15.8M | 0.08% | 0.0% |
| 4 | Verbena Value#4 · 1,222,740 sh | 1,222,740 | $12.8M | 2.11% | 0.0% |
| 5 | BERKLEY W R#5 · 1,196,423 sh | 1,196,423 | $11.5M | 0.55% | +22.4% |
| 6 | AQR Arbitrage#6 · 2,300,891 sh | 2,300,891 | $11.0M | 0.16% | -1.4% |
| 7 | GLAZER CAPITAL#7 · 1,029,743 sh | 1,029,743 | $10.5M | 0.26% | +41.1% |
| 8 | D. E. Shaw#8 · 1,790,500 sh | 1,790,500 | $10.1M | <0.01% | 0.0% |
| 9 | Crossingbridge Advisors#9 · 940,222 sh | 940,222 | $9.8M | 1.73% | 0.0% |
| 10 | Magnetar Financial#10 · 1,365,000 sh | 1,365,000 | $7.2M | 0.07% | 0.0% |
| 11 | MIZUHO SECURITIES USA#11 · 685,345 sh | 685,345 | $7.1M | 0.07% | +160.0% |
| 12 | Radcliffe Capital Management, L.P.#12 · 525,544 sh | 525,544 | $5.5M | 0.42% | 0.0% |
| 13 | RiverPark Advisors#13 · 475,322 sh | 475,322 | $5.0M | 2.27% | 0.0% |
| 14 | RIVERNORTH CAPITAL MANAGEMENT#14 · 798,143 sh | 798,143 | $4.3M | 0.20% | 0.0% |
| 15 | Wealthspring Capital#15 · 1,034,482 sh | 1,034,482 | $4.0M | 0.88% | +21.6% |
| 16 | Sculptor Capital#16 · 1,047,606 sh | 1,047,606 | $3.9M | 0.03% | 0.0% |
| 17 | GOLDMAN SACHS GROUP#17 · 369,995 sh | 369,995 | $3.9M | <0.01% | 0.0% |
| 18 | LMR Partners LLP#18 · 800,000 sh | 800,000 | $3.8M | 0.01% | 0.0% |
| 19 | MOORE CAPITAL MANAGEMENT#19 · 600,000 sh | 600,000 | $3.3M | 0.05% | 0.0% |
| 20 | METEORA CAPITAL#20 · 489,800 sh | 489,800 | $3.2M | 0.27% | 0.0% |
| 21 | Qube Research & Technologies Ltd#21 · 293,951 sh | 293,951 | $3.1M | <0.01% | 0.0% |
| 22 | TORONTO DOMINION BANK#22 · 477,087 sh | 477,087 | $2.8M | <0.01% | -14.7% |
| 23 | Clear Street Group#23 · 581,710 sh | 581,710 | $2.7M | <0.01% | +32.7% |
| 24 | WHITEBOX ADVISORS#24 · 400,000 sh | 400,000 | $2.2M | 0.03% | 0.0% |
| 25 | GRITSTONE ASSET MANAGEMENT#25 · 395,799 sh | 395,799 | $2.1M | — | 0.0% |
| 26 | SkyView Investment Advisors#26 · 201,320 sh | 201,320 | $2.1M | 1.65% | New |
| 27 | BANK OF AMERICA#27 · 200,000 sh | 200,000 | $2.1M | <0.01% | 0.0% |
| 28 | Brevan Howard Capital Management#28 · 200,000 sh | 200,000 | $2.1M | 0.02% | +150.0% |
| 29 | HRT FINANCIAL#29 · 167,145 sh | 167,145 | $1.7M | <0.01% | 0.0% |
| 30 | PICTON MAHONEY ASSET MANAGEMENT#30 · 350,000 sh | 350,000 | $1.6M | 0.01% | 0.0% |
| 31 | DLD Asset Management#31 · 303,151 sh | 303,151 | $1.6M | 0.11% | 0.0% |
| 32 | Shaolin Capital Management#32 · 489,244 sh | 489,244 | $1.4M | 0.07% | -11.0% |
| 33 | ARISTEIA CAPITAL, L.L.C.#33 · 125,000 sh | 125,000 | $1.3M | 0.02% | 0.0% |
| 34 | PERISCOPE CAPITAL#34 · 293,740 sh | 293,740 | $1.1M | 0.10% | -15.1% |
| 35 | CANTOR FITZGERALD, L. P.#35 · 89,590 sh | 89,590 | $936.2K | 0.01% | 0.0% |
| 36 | MILLENNIUM MANAGEMENT#36 · 75,000 sh | 75,000 | $783.8K | <0.01% | 0.0% |
| 37 | HEIGHTS CAPITAL MANAGEMENT#37 · 60,000 sh | 60,000 | $627.0K | 0.14% | 0.0% |
| 38 | Cannon Global Investment Management#38 · 58,400 sh | 58,400 | $610.3K | — | +0.7% |
| 39 | WOLVERINE ASSET MANAGEMENT#39 · 56,632 sh | 56,632 | $591.8K | <0.01% | -12.3% |
| 40 | K2 PRINCIPAL FUND, L.P.#40 · 257,949 sh | 257,949 | $572.6K | 0.04% | -27.6% |
| 41 | CSS#41 · 51,900 sh | 51,900 | $542.4K | 0.02% | 0.0% |
| 42 | Stoic Point Capital Management#42 · 50,000 sh | 50,000 | $504.0K | 0.42% | New |
| 43 | HEALTHCARE OF ONTARIO PENSION PLAN FUND#43 · 1,500,000 sh | 1,500,000 | $480.0K | <0.01% | 0.0% |
| 44 | Parallax Volatility Advisers, L.P.#44 · 163,088 sh | 163,088 | $435.1K | <0.01% | +30.3% |
| 45 | Harraden Circle Investments#45 · 825,362 sh | 825,362 | $321.1K | 0.04% | 0.0% |
| 46 | StoneX Group#46 · 30,000 sh | 30,000 | $312.0K | 0.01% | New |
| 47 | DAVIDSON KEMPNER CAPITAL MANAGEMENT#47 · 24,600 sh | 24,600 | $257.1K | <0.01% | 0.0% |
| 48 | Centiva Capital#48 · 215,900 sh | 215,900 | $244.0K | <0.01% | New |
| 49 | Verition Fund Management#49 · 600,985 sh | 600,985 | $233.8K | <0.01% | -1.3% |
| 50 | GEODE CAPITAL MANAGEMENT#50 · 22,239 sh | 22,239 | $232.4K | 0.00% | -24.1% |
| 51 | Polar Asset Management Partners#51 · 500,000 sh | 500,000 | $194.5K | <0.01% | 0.0% |
| 52 | BNP PARIBAS FINANCIAL MARKETS#52 · 444,056 sh | 444,056 | $172.7K | <0.01% | 0.0% |
| 53 | Shay Capital#53 · 14,135 sh | 14,135 | $147.7K | <0.01% | 0.0% |
| 54 | Lineage Point Capital#54 · 84,000 sh | 84,000 | $133.3K | 0.03% | +740.0% |
| 55 | ROBINSON CAPITAL MANAGEMENT#55 · 24,250 sh | 24,250 | $131.8K | 0.06% | New |
| 56 | CITADEL ADVISORS#56 · 10,635 sh | 10,635 | $111.1K | 0.00% | New |
| 57 | BARCLAYS PLC#57 · 10,000 sh | 10,000 | $104.5K | 0.00% | 0.0% |
| 58 | Saba Capital Management, L.P.#58 · 175,000 sh | 175,000 | $62.0K | <0.01% | 0.0% |
| 59 | Walleye Capital#59 · 149,884 sh | 149,884 | $58.3K | <0.01% | 0.0% |
| 60 | SRS Capital Advisors#60 · 7,323 sh | 7,323 | $29.7K | <0.01% | New |
| 61 | MYDA Advisors#61 · 60,000 sh | 60,000 | $23.3K | <0.01% | 0.0% |
| 62 | READYSTATE ASSET MANAGEMENT#62 · 48,331 sh | 48,331 | $18.8K | 0.00% | 0.0% |
| 63 | FNY Investment Advisers#63 · 1,160 sh | 1,160 | $12.0K | — | -77.5% |
| 64 | RMB Capital Management#64 · 27,560 sh | 27,560 | $10.7K | <0.01% | 0.0% |
| 65 | CONDOR CAPITAL MANAGEMENT#65 · 13,650 sh | 13,650 | $5.3K | <0.01% | 0.0% |
| 66 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#66 · 12,843 sh | 12,843 | $5.0K | 0.00% | -49.7% |
| 67 | MORGAN STANLEY#67 · 58 sh | 58 | $606.00 | 0.00% | -22.7% |
| 68 | Context Capital Management#68 · 247,500 sh | 247,500 | — | — | 0.0% |
Funds that sold out of ONEN in Q2 2026 (6)
Held ONEN at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Aventail Capital Group1,452,081 sh | 1,452,081 | $15.0M |
| Schonfeld Strategic Advisors42,913 sh | 42,913 | $150.3K |
| Mirae Asset Global Investments , Ltd.4,500 sh | 4,500 | $46.6K |
| T3 Companies19,700 sh | 19,700 | $5.6K |
| NATIONAL BANK OF CANADA525 sh | 525 | $5.4K |
| UBS Group AG50 sh | 50 | $518.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.