Ticker · CUSIP 881454102
Holders (tracked)
9
Combined shares
3,869,199
Combined value
$23.64M
Last close
$7.61
Quarter
2025Q4
Price · 1Y$7.61-3.12 (-29.06%)H $27.10 · L $5.53 · Avg Vol 1.7M
Position opened
Price is +24.5% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
7 events
- Two Sigma Investments opened position2026-02-17+57,712 shares · 2025Q4Position
- D.E. Shaw & Co. opened position2026-02-17+1,079,546 shares · 2025Q4Position
- Jeremy Grantham (GMO) opened position2026-02-17+11,475 shares · 2025Q4Position
- +2,029,208 shares · 2025Q4Position
- +31,658 shares · 2025Q4Position
- +103,000 shares · 2025Q4Position
- Renaissance Technologies opened position2026-02-12+172,800 shares · 2025Q4Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of IMSR…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| Jeremy Grantham (GMO) | 2025Q4 | $6.11 | +24.5% | $87K |
| Izzy Englander (Millennium Mgmt) | 2025Q4 | $6.11 | +24.5% | $241K |
| Two Sigma Investments | 2025Q4 | $6.11 | +24.5% | $439K |
| D.E. Shaw & Co. | 2025Q4 | $6.11 | +24.5% | $8.2M |
| Renaissance Technologies | 2025Q4 | $6.11 | +24.5% | $1.3M |
| Paul Tudor Jones (Tudor Investment) | 2025Q4 | $6.11 | +24.5% | $783K |
| Ken Griffin (Citadel Advisors) | 2025Q4 | $6.11 | +24.5% | $831K |
| Ken Griffin (Citadel Advisors) | 2025Q4 | $6.11 | +24.5% | $831K |
| Ken Griffin (Citadel Advisors) | 2025Q4 | $6.11 | +24.5% | $831K |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions7
- Ken Griffin (Citadel Advisors)+2,029,208$12.4M
- D.E. Shaw & Co.+1,079,546$6.6M
- Renaissance Technologies+172,800$1.1M
- Paul Tudor Jones (Tudor Investment)+103,000$629K
- Two Sigma Investments+57,712$353K
- Izzy Englander (Millennium Mgmt)+31,658$193K
- Jeremy Grantham (GMO)+11,475$70K
Added to0
—
Trimmed0
—
Exited0
—
Who owns IMSR
9 super-investors · 2025Q4
Tracked stake
3.87M
shares
Combined value
$24M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New9
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Ken Griffin Citadel Advisors | 2.03M | $12M |
| 2 | D.E. Shaw & Co. | 1.08M | $7M |
| 3 | Ken Griffin Citadel Advisors | 274.5K | $2M |
| 4 | Renaissance Technologies | 172.8K | $1M |
| 5 | Ken Griffin Citadel Advisors | 109.3K | $668K |
| 6 | Paul Tudor Jones Tudor Investment | 103.0K | $629K |
| 7 | Two Sigma Investments | 57.7K | $353K |
| 8 | Izzy Englander Millennium Mgmt | 31.7K | $193K |
| 9 | Jeremy Grantham GMO | 11.5K | $70K |
Recent moves
7 transactions
- +57,712 · 2025Q4
- +1,079,546 · 2025Q4
- +11,475 · 2025Q4
- +2,029,208 · 2025Q4
- +31,658 · 2025Q4
- +103,000 · 2025Q4
- +172,800 · 2025Q4
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