Terrestrial Energy Inc. (IMSR)
- Sector
- Utilities
- Industry
- Utilities - Regulated Electric
- Last price
- $3.11
- As of
Kresmion compiles this page from IMSR's SEC filings, its 13F institutional holders and the market events Kresmion detects, each linked to its source.
Terrestrial Energy Inc. /DE/ (IMSR): 4 institutional managers tracked by Kresmion reported non-option positions in their 2026Q2 Form 13F filings, and the most recent SEC filing on record for the company is a Form 8-K filed 2026-08-11.
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Preview the IMSR dossierActive signals for IMSR
- highINSTITUTIONAL_SURGE
CITADEL ADVISORS LLC added +93% to IMSR (2026Q2)
- highINSTITUTIONAL_SURGE
CITADEL ADVISORS LLC added +435% to IMSR (2026Q2)
- highINSTITUTIONAL_EXIT
CITADEL ADVISORS LLC cut 91% of IMSR (2026Q2)
- highINSTITUTIONAL_SURGE
MILLENNIUM MANAGEMENT LLC added +203% to IMSR (2026Q2)
- highINSTITUTIONAL_EXIT
RENAISSANCE TECHNOLOGIES LLC cut 55% of IMSR (2026Q2)
FREE, NO ACCOUNT
Every signal on IMSR, as it fires
You are seeing 5 of 8 signals recorded on IMSR since 2026-05-27.
The five above all landed on 2026-08-16. The other 3 were recorded on 3 other days. 6 of the 8 are institutional flow rows, which arrive in batches on filing days.
No fixed schedule: it goes out when the data has something in it. Unsubscribe anytime. We never sell your data.
Largest reported share positions in IMSR (2026Q2)
| Manager / security | Market value | % portfolio | QoQ |
|---|---|---|---|
| D. E. Shaw & Co., Inc.CUSIP 881454102 · 2026Q2 | $4.7M | 0.00% | , |
| RENAISSANCE TECHNOLOGIES LLCCUSIP 881454102 · 2026Q2 | $1.3M | 0.00% | , |
| MILLENNIUM MANAGEMENT LLCCUSIP 881454102 · 2026Q2 | $680K | 0.00% | , |
| CITADEL ADVISORS LLCCUSIP 881454102 · 2026Q2 | $71K | 0.00% | , |
Quarterly SEC Form 13F disclosures from the managers Kresmion tracks, not a complete ownership ranking. Non-option holdings only; reported put and call positions are excluded. Different securities are labeled by CUSIP. Values are reporting-period snapshots, not current position values. Filings can arrive up to 45 days after quarter-end.
Recent SEC filings, IMSR
- 8-KSEC EDGAR ↗
- 10-QSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 8-KSEC EDGAR ↗
- 10-QSEC EDGAR ↗
- 8-KSEC EDGAR ↗
IMSR against its peers
IMSR's operating margin of -10145.3% ranks in the 8th percentile of 5 Utilities - Regulated Electric sub-industry peers, fiscal period ending 2025-12-31.
| Metric | IMSR | Peer median | Percentile | n |
|---|---|---|---|---|
| Revenue FY | 248357 USD | n/a | n/a | 3 |
| Operating margin | -10145.3% | 20.2% | 8 | 5 |
| Net margin | -11280.8% | 11.2% | 8 | 5 |
| Return on equity | -9.5% | 9.6% | 8 | 5 |
Peers (6): GNE, NKLR, NWE, EMA, HRNNF, VIASP. Left out: EDN (period gap), CEPU (period gap), ENIC (period gap), ELPC (period gap), KEP (period gap), AILIH (no annual filing), CMS-PB (no annual filing), CNTHP (no annual filing), ETI-P (no annual filing), NSARO (no annual filing), UELMO (no annual filing). Fiscal period ending 2025-12-31. Every figure is one full fiscal year read from one annual filing (IMSR: 10-K), reported in USD. Nothing is trailing twelve months and nothing is converted between currencies. Source: SEC EDGAR XBRL company facts (public domain); prices from Kresmion's daily equity market-data snapshot. Open the full comparison.
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