CIK: 0001081698
Total reported value
$358.8M
Reporting period: 2026-03-31 · Number of holdings: 265
HEIGHTS CAPITAL MANAGEMENT, INC disclosed 265 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $358.8M and a quarterly turnover rate of 104.9%.
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Heights Capital Management, INC's disclosed holdings carry a Herfindahl concentration index of 0.029 — mathematically equivalent to about 35 equally-sized positions, well below its 265 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 2.59), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 15% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Trim FLUT
0.0% -$33.3M
Trim NNE
-86.7% -$13.0M
Trim B6S7WD106
-60.3% -$2.7M
New buy SLDP
New buy IONQ
New buy CMPS
Showing top 200 holdings (of 265 total)
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | SLDP | Solid Power INC | Stock-Other | 10.37% | +10.37% | NEW | |
| 2 | FLUT | Flutter Entertainment plc | Stock-Consumer Disc | 8.36% | -14.33% | — | |
| 3 | IONQ | Ionq INC | Stock-Tech | 6.55% | +6.55% | NEW | |
| 4 | CMPS | Compass Pathways PLC | Stock-Other | 2.30% | +2.30% | NEW | |
| 5 | ✓ | Sealsq CORP | Stock-Other | 2.29% | +2.29% | NEW | |
| 6 | FGMC | Fg Merger Ii CORP | Stock-Other | 2.22% | — | — | |
| 7 | ✓ | Jackson Acquisition Co Ii | Stock-Other | 2.07% | — | — | |
| 8 | ✓ | Drugs Made In Amer Acqutn Co | Stock-Other | 1.90% | — | — | |
| 9 | ✓ | Pono Cap Four INC | Stock-Other | 1.53% | +1.53% | NEW | |
| 10 | ✓ | M3brigade Acquisition V CORP | Stock-Other | 1.50% | +1.50% | NEW | |
| 11 | ✓ | Drugs Made In Amer Acq Ii Co | Stock-Other | 1.44% | +1.44% | NEW | |
| 12 | ✓ | Kochav Defense Acqui Co S | Stock-Other | 1.43% | — | — | |
| 13 | ✓ | Bhav Acquisition CORP | Stock-Other | 1.38% | +1.38% | NEW | |
| 14 | ✓ | Xflh Cap CORP | Stock-Other | 1.32% | +1.32% | NEW | |
| 15 | IRHO | Iron Horse Acquisitions CORP | Stock-Other | 1.29% | +1.29% | NEW | |
| 16 | ✓ | Nmp Acquisition CORP | Stock-Other | 1.27% | — | — | |
| 17 | ✓ | Churchill Cap CORP Xi | Stock-Other | 1.27% | +1.27% | NEW | |
| 18 | EMPD | Empery Digital INC | Stock-Other | 1.18% | — | — | |
| 19 | GPATU | GP-Act III Acquisition Corp. | Stock-Other | 1.17% | — | -6.58% | |
| 20 | CADL | Candel Therapeutics INC | Stock-Other | 1.06% | +1.06% | NEW | |
| 21 | ✓ | Armada Acquisition CORP Iii | Stock-Other | 1.02% | +1.02% | NEW | |
| 22 | ✓ | Fifth Era Acquisition CORP I | Stock-Other | 1.00% | — | — | |
| 23 | ✓ | Stock-Other | 0.98% | — | — | ||
| 24 | ✓ | Future Vision Ii Acquisition | Stock-Other | 0.98% | — | — | |
| 25 | ✓ | Twelve Seas Invt Co Iii | Stock-Other | 0.97% | +0.97% | NEW | |
| 26 | ✓ | Flag Ship Acquisition CORP | Stock-Other | 0.92% | — | -1.38% | |
| 27 | ✓ | Stock-Other | 0.86% | — | — | ||
| 28 | ✓ | Ai Infrastructure Acquisi | Stock-Other | 0.84% | +0.84% | NEW | |
| 29 | ✓ | Newbridge Acquisition LTD | Stock-Other | 0.84% | +0.84% | NEW | |
| 30 | ✓ | Hennessy Cap Invts CORP Viii | Stock-Other | 0.84% | +0.84% | NEW | |
| 31 | ✓ | Future Money Acquisition Cor | Stock-Other | 0.83% | +0.83% | NEW | |
| 32 | ✓ | Bleichroeder Acquisiti CORP | Stock-Other | 0.78% | +0.78% | NEW | |
| 33 | ✓ | Stock-Other | 0.74% | — | — | ||
| 34 | ✓ | Stock-Other | 0.71% | — | — | ||
| 35 | ✓ | Origin Invt CORP I | Stock-Other | 0.71% | — | — | |
| 36 | ✓ | Oxley Bridge Acq LTD | Stock-Other | 0.71% | — | — | |
| 37 | ✓ | Meshflow Acquisition CORP | Stock-Other | 0.69% | +0.69% | NEW | |
| 38 | ✓ | Championsgate Acquisition Co | Stock-Other | 0.61% | — | — | |
| 39 | ✓ | Stock-Other | 0.59% | — | — | ||
| 40 | ✓ | Stock-Other | 0.57% | — | — | ||
| 41 | ✓ | Sizzle Acquisition CORP. Ii | Stock-Other | 0.57% | — | — | |
| 42 | ✓ | Soulpower Acquisition CORP | Stock-Other | 0.57% | — | — | |
| 43 | ✓ | Spring Vy Acquisition CORP I | Stock-Other | 0.57% | +0.57% | NEW | |
| 44 | ✓ | A Paradise Acquisition CORP | Stock-Other | 0.57% | — | — | |
| 45 | ✓ | Silver Pegasus Acquisition C Shs Cl | Stock-Other | 0.56% | — | — | |
| 46 | ✓ | Stock-Other | 0.56% | +0.56% | NEW | ||
| 47 | ✓ | Crown Resv Acquisition CORP I | Stock-Other | 0.56% | — | — | |
| 48 | ✓ | Krakacquisition Corporation | Stock-Other | 0.56% | +0.56% | NEW | |
| 49 | ✓ | Dynamix CORP Iii | Stock-Other | 0.55% | +0.55% | NEW | |
| 50 | ✓ | Stock-Other | 0.55% | — | — |
Performance for Q3 2026
—
Performance Last 4 Quarters
—
Based on 25% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-03-31 | 265 | $358.8M | 100 | |
| 2025-12-31 | 192 | $278.8M | 80 | |
| 2025-09-30 | 182 | $351.0M | 100 | |
| 2025-06-30 | 162 | $374.7M | 0 | |
| 2025-03-31 | 129 | $213.0M | 0 | |
| 2024-12-31 | 146 | $202.2M | 0 | |
| 2024-09-30 | 138 | $134.8M | 0 |
Heights Capital Management, INC's most significant position changes for 2026-03-31: New buy: Solid Power INC (SLDP); New buy: Ionq INC (IONQ); New buy: Compass Pathways PLC (CMPS); New buy: Sealsq CORP; New buy: Pono Cap Four INC.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ✓ | Nyxoah S A | -1% | -60.31% | Trim |
| 2 | NNE | Nano Nuclear Energy INC | -4.8% | -86.69% | Trim |
| 3 | FLUT | Flutter Entertainment plc | -14.3% | — | Unchanged |
| 4 | SLDP | Solid Power INC | — | NEW | New buy |
| 5 | IONQ | Ionq INC | — | NEW | New buy |
| 6 | CMPS | Compass Pathways PLC | — | NEW | New buy |
| 7 | ✓ | Sealsq CORP | — | NEW | New buy |
| 8 | ✓ | Pono Cap Four INC | — | NEW | New buy |
| 9 | ✓ | M3brigade Acquisition V CORP | — | NEW | New buy |
| 10 | ✓ | Drugs Made In Amer Acq Ii Co | — | EXIT | Sold out |
| 11 | ✓ | Drugs Made In Amer Acq Ii Co | — | NEW | New buy |
| 12 | ✓ | — | EXIT | Sold out | |
| 13 | ✓ | Bhav Acquisition CORP | — | NEW | New buy |
| 14 | ✓ | Xflh Cap CORP | — | NEW | New buy |
| 15 | IRHOU | Iron Horse Acquisition Ii Co | — | EXIT | Sold out |
| 16 | IRHO | Iron Horse Acquisitions CORP | — | NEW | New buy |
| 17 | ✓ | Churchill Cap CORP Xi | — | NEW | New buy |
| 18 | CADL | Candel Therapeutics INC | — | NEW | New buy |
| 19 | ABSI | Absci CORP | — | EXIT | Sold out |
| 20 | ✓ | Armada Acquisition CORP Iii | — | NEW | New buy |
| 21 | ✓ | Twelve Seas Invt Co Iii | — | EXIT | Sold out |
| 22 | ✓ | Twelve Seas Invt Co Iii | — | NEW | New buy |
| 23 | ✓ | Crescent Biopharma INC. | — | EXIT | Sold out |
| 24 | ✓ | Ai Infrastructure Acquisi | — | EXIT | Sold out |
| 25 | ✓ | Newbridge Acquisition LTD | — | NEW | New buy |
| 26 | ✓ | Ai Infrastructure Acquisi | — | NEW | New buy |
| 27 | ✓ | Hennessy Cap Invts CORP Viii | — | NEW | New buy |
| 28 | ✓ | Future Money Acquisition Cor | — | NEW | New buy |
| 29 | ✓ | Bleichroeder Acquisiti CORP | — | NEW | New buy |
| 30 | VOYG | Voyager Technologies, Inc. | — | EXIT | Sold out |
| 31 | KYTX | Kyverna Therapeutics INC | — | EXIT | Sold out |
| 32 | ✓ | Meshflow Acquisition CORP | — | EXIT | Sold out |
| 33 | ✓ | Meshflow Acquisition CORP | — | NEW | New buy |
| 34 | SLNH | Soluna Holdings INC | — | EXIT | Sold out |
| 35 | ✓ | — | EXIT | Sold out | |
| 36 | ✓ | Columbus Acquisition CORP | — | EXIT | Sold out |
| 37 | ✓ | Spring Vy Acquisition CORP I | — | NEW | New buy |
| 38 | ✓ | Aa Mission Acquisition CORP | — | EXIT | Sold out |
| 39 | ✓ | — | NEW | New buy | |
| 40 | ✓ | Dynamix CORP Iii | — | EXIT | Sold out |
| 41 | ✓ | Krakacquisition Corporation | — | NEW | New buy |
| 42 | ✓ | Dynamix CORP Iii | — | NEW | New buy |
| 43 | ✓ | — | EXIT | Sold out | |
| 44 | SCYXEUR | Scynexis INC | — | NEW | New buy |
| 45 | ✓ | Iris Acquisition CORP Ii | — | NEW | New buy |
| 46 | ✓ | Qdro Acquisition CORP | — | NEW | New buy |
| 47 | QM30 | Nova Minerals Ltd-adr | — | EXIT | Sold out |
| 48 | ✓ | Inflection Pt Acquisit CORP | — | NEW | New buy |
| 49 | ✓ | — | EXIT | Sold out | |
| 50 | ✓ | Evolution Global Acquisition | — | EXIT | Sold out |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-15 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-17 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-18 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-18 | Amendment | View on EDGAR |
| 2025-09-30 | 2025-11-14 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-08-14 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-05-14 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-02-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-11-14 | 13F-HR | View on EDGAR |
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