Heights Capital Management, Inc.

In its 13F for Q1 2025 (holdings as of March 31, 2025, filed May 14, 2025), Heights Capital Management, Inc. reported 67 stock positions worth $195.3 million. Its top holding was Flutter Entertainment PLC-Di (FLUT) at 33.4% of the portfolio, followed by Plug Power (PLUG, 16.0%) and FG Merger II (FGMCU, 3.9%). Compared with Q4 2024, it opened 18 new positions, sold out of 17 and reduced 3. The biggest buy was a new position in Plug Power (PLUG) and the biggest sale an exit from Nano Nuclear Energy (NNE).

Most Recent 13F
Q2 2026
Location
SAN FRANCISCO, CA
CIK
0001081698
Portfolio Value
$195.3M (Q1 2025)
SEC Filing
0001081698-25-000003 ↗ filed May 14, 2025

Holdings Value

0$100.0M$200.0M$300.0M$400.0M$500.0M Q3 2024: $125.9M Q3 2024 Q4 2024: $186.0M Q4 2024 Q1 2025: $195.3M $195.3M Q1 2025 Q2 2025: $309.2M Q2 2025 Q3 2025: $301.2M Q3 2025 Q4 2025: $261.6M Q4 2025 Q1 2026: $354.0M Q1 2026 Q2 2026: $425.0M Q2 2026

Holdings 67 stocks · $195.3M

FLUT Flutter Entertainment PLC-Di 33.37% 294,180 $65.2M No change
PLUG Plug Power Inc. 15.96% 23,091,715 $31.2M New
FGMCU FG Merger II Corp. 3.95% 790,000 $7.7M New
JACS.U Jackson Acquisition Co. II 3.69% 700,000 $7.2M No change
HUMA Humacyte Inc. 3.51% 4,025,000 $6.9M New
DMAAU Drugs Made in America Acquis 3.37% 650,000 $6.6M New
ONDS Ondas Inc. filed as ONDAS HLDGS INC 2.46% 4,494,501 $4.8M Reduce -6.6%
GPAT GP-Act III Acquisition-A 2.43% 460,000 $4.8M No change
FERAU Fifth Era Acquisition Corp. I 1.80% 350,000 $3.5M New
FVN Future Vision II Acquisition 1.69% 325,000 $3.3M No change
FSHP Flag Ship Acquisition Corp. 1.66% 314,000 $3.2M No change
CEP Cantor Equity Partners Inc. 1.65% 300,000 $3.2M No change
IBAC Ib Acquisition Corp. 1.32% 250,000 $2.6M No change
VACH Voyager Acquisition Corp. 1.30% 250,000 $2.5M No change
PLMKU Plum Acquisition Corp. IV 1.29% 250,000 $2.5M New
SNTI Senti Biosciences Inc. 1.29% 750,000 $2.5M New
REEAF Ree Automotive Ltd. Class A 1.23% 899,917 $2.4M New
HAYMAKER ACQUISITION CORP 4 1.10% 195,077 $2.1M No change
RIBBU Ribbon Acquisition Corp. 1.05% 200,000 $2.1M New
COLAU Columbus Acquisition Corp. 1.04% 200,000 $2.0M New
ALGS Aligos Therapeutics Inc. 1.02% 241,500 $2.0M New
UYSCU Uy Scuti Acquisition Corp. 0.90% 175,000 $1.8M New
UCFI CN Healthy Food Tech Group C filed as IRON HORSE ACQUISITIONS CORP 0.89% 165,043 $1.7M No change
CAPN Cayson Acquisition Corp. 0.78% 150,000 $1.5M No change
DYNC Dynamix Corp. 0.61% 120,000 $1.2M No change
VLOS Velos Acquisition I Corp. filed as M3BRIGADE ACQUISITION V CORP 0.53% 100,000 $1.0M No change
CUB Lionheart Holdings Class A 0.53% 100,000 $1.0M No change
DTSQ DT Cloud Star Acquisition Co. 0.52% 100,000 $1.0M No change
MACI Melar Acquisition Corp. I-A 0.52% 100,000 $1.0M No change
MAYWOOD ACQUISITION CORP 0.52% 100,000 $1.0M New
DYCQ DT Cloud Acquisition Corp. 0.50% 90,200 $967K No change
FTW Eqv Ventures Acquisition C-A 0.48% 93,574 $947K No change
DRDBU Roman DBDR Acquisition Corp. 0.40% 75,000 $788K No change
GSRTU GSR III Acquisition Corp. 0.37% 70,000 $719K No change
TAVIU Tavia Acquisition Corp. 0.34% 65,000 $668K No change
PGACU Pantages Capital Acquisition filed as AIFEEX NEXUS ACQUISITION COR 0.34% 65,000 $664K No change
GNLX Genelux Corp. 0.33% 238,366 $644K New
ASPCU A Spac III Acquisition Corp. 0.31% 60,000 $613K No change
FACTU Fact II Acquisition Corp. 0.31% 60,000 $604K No change
HVIIU Hennessy Capital Investment 0.31% 60,000 $604K New
GLACF Global Lights Acquisition Co. 0.30% 53,354 $579K No change
VCIC Vine Hill Capital Class A 0.29% 55,790 $568K No change
FORL Four Leaf Acquisition Cor-A 0.28% 49,122 $556K No change
NETD Nabors Energy Transition C-A 0.28% 49,795 $545K No change
CCIX Churchill Capital Corp. Ix 0.27% 48,900 $526K No change
SRZN Surrozen Inc. 0.27% 44,978 $524K New
RANGU Range Capital Acquisition Co. 0.26% 50,000 $514K No change
CHEB Chenghe Acquisition II Co. 0.26% 50,000 $513K No change
NTWOU Newbury Street II Acquisitio 0.23% 45,000 $455K No change
NOEMU CO2 Energy Transition Corp. 0.21% 40,000 $408K No change
RDAC Rising Dragon Acquisition Co. 0.21% 40,000 $408K No change
CHARU Charlton Aria Acquisition Co. 0.21% 40,000 $406K No change
ANSC Agriculture & Natural Soluti 0.19% 35,482 $379K No change
WLACU Willow Lane Acquisition Corp. 0.18% 35,000 $354K No change
YHNA YHN Acquisition I Ltd. 0.15% 29,000 $296K No change
POLE Andretti Acquisition Corp. Class A 0.14% 26,600 $270K No change
GFL GFL Environmental Inc.-Sub VT 0.12% 5,000 $242K New
HSPTU Horizon Space Acquisition II 0.10% 20,000 $204K No change
BSII Black Spade Acquisition II C 0.10% 20,000 $203K No change
SINT Sintx Technologies Inc. 0.08% 60,964 $162K New
EURK Eureka Acquisition Corp. 0.08% 15,400 $158K No change
SCLX Scilex Holding Co. 0.03% 221,869 $55K No change
LBRA 1847 Holdings LLC filed as 1847 HLDGS LLC 0.01% 236,790 $28K No change
PMN Promis Neurosciences Inc. 0.01% 18,267 $13K Reduce -88.6%
BIOMX INC 0.00% 14,497 $8K Reduce -94.4%
VERSUS SYSTEMS INC 0.00% 100,000 $8K No change
AEHL Antelope Enterprise Holdings 0.00% 25,036 $2K No change

Options reported separately and not counted above: NNE puts ($4.0M), CKPT puts ($152K).

Other holdings (60): bonds, preferreds, convertibles and warrants · $13.6M (not counted above)
SecurityClassShares / PrincipalValueChange
OATLY GROUP AB (OTLY 9.25 09/14/28) NOTE 9.250% 9/1 · principal 11,520,162$7.8MNo change
PURECYCLE TECHNOLOGIES (PCT 7.25 08/15/30) NOTE 7.250% 8/1 · principal 6,000,000$4.9MReduce -14.3%
GROY.WS Gold Royalty Corp. -29 *W EXP 05/31/202 249,397$62KNo change
GBBKR Global Blockchain Acq - RTS RIGHT 05/09/2027 625,000$62KNo change
IROHR Iron Horse Acquisitions Righ RIGHT 99/99/9999 200,000$60KNo change
FVNNR Future Vision II Acquisi-RTS RIGHT 06/29/2029 325,000$52KNo change
FSHPR Flag Ship Acquisition Corp. RIGHT 03/31/2026 314,000$50KNo change
GWHWW Ess Tech Inc. -CW27 *W EXP 10/08/202 586,218$47KNo change
TBMCR Trailblazer Merger Corp.-RTS RIGHT 04/21/2028 130,000$33KNo change
GPATW GP-Act III Acq Class A -CW27 *W EXP 05/13/202 173,972$32KReduce -1.3%
BAYAR Bayview Acquisition Corp. RIGHT 11/17/2028 147,900$28KNo change
BUJAR Bukit Jalil Global Acquisiti RIGHT 12/30/2024 100,000$26KNo change
DYCQR DT Cloud Acquisition Cor-RTS RIGHT 02/14/2029 100,000$24KNo change
OAKUR Oak Woods Acquisition Cor-RT RIGHT 03/23/2028 90,000$23KNo change
CAPNR Cayson Acquisition Corp. RIGHT 99/99/9999 150,000$23KNo change
EMCRF Embrace Change Acq-Rights RIGHT 10/25/2026 118,500$23KNo change
GLLRF Global Lights Acquisition Co. RIGHT 99/99/9999 99,800$22KNo change
AMPGW Amplitech Group Inc.-CW26 *W EXP 02/26/202 46,662$19KNo change
TNONW Tenon Medical Inc.-28 *W EXP 06/16/202 851,594$17KReduce -14.8%
DYNCW Dynamix Corp. - 29 *W EXP 10/25/202 60,000$17KNo change
DTSQR DT Cloud Star Acquisition Co. RIGHT 07/09/2029 100,000$16KNo change
IBACR Ib Acquisition Corp.-RTS RIGHT 09/28/2026 250,000$15KNo change
DISTR Distoken Acquisition Corp. RIGHT 99/99/9999 80,000$14KNo change
LEXXW Lexaria Bioscience -CW25 *W EXP 01/14/202 41,251$13KNo change
CYCUW Cycurion Inc.-CW27 *W EXP 02/13/203 348,015$13KReduce -20.5%
GBBKW Global Blockchain Acq-CW27 *W EXP 05/09/202 427,592$13KReduce -3.4%
DTSTW Data Storage Corp. -CW26 *W EXP 05/18/202 29,000$10KNo change
AIMDW Ainos Inc. - 27 *W EXP 07/29/202 82,500$9KNo change
CLRRF Climaterock -RTS RIGHT 10/31/2028 50,000$9KNo change
VLOSW M3-Brigade Acquisition -30 *W EXP 99/99/999 27,889$8KReduce -21.0%
YOTAR Yotta Acquisition Corp. - RTS RIGHT 03/15/2027 50,000$8KNo change
IVDAW Iveda Solutions Inc. -CW27 *W EXP 04/01/202 54,000$8KNo change
VCICW Vine Hill Capital Class A-2 *W EXP 07/01/203 27,895$7KNo change
SBEVW Splash Beverage Group -CW *W EXP 06/15/202 288,884$7KNo change
ECXWW Ecarx Holdings Inc. Class A-27 *W EXP 99/99/999 149,100$7KNo change
RDACR Rising Dragon Acquisition Co. RIGHT 11/15/2028 40,000$6KNo change
UCFIW Iron Horse Acquisition Co.-29 *W EXP 09/30/203 200,000$6KNo change
RMCOW American Acq Class A -CW26 *W EXP 10/31/202 357,253$5KNo change
LMND.WS Lemonade Inc.-28 *W EXP 02/09/202 88,946$5KNo change
CUBWW Lionheart Holdings - WT *W EXP 06/07/203 39,510$5KReduce -8.5%
MSSRF Metal SKY Star Acquisi-Right RIGHT 12/31/2025 55,000$4KNo change
MACIW Melar Acquisition Corp. I -29 *W EXP 06/01/203 28,832$4KReduce -29.5%
YHNAR YHN Acquisition I Ltd. RIGHT 08/15/2029 29,000$4KNo change
EURKR Eureka Acquisition Corp.-RTS RIGHT 07/03/2026 15,400$4KNo change
FORLW Four Leaf Acquisition Cor-28 *W EXP 03/15/202 68,700$3KNo change
VRMEW Verifyme Inc. -CW25 *W EXP 06/22/202 67,870$3KNo change
VACHW Voyager Acquisition Corp. -CW *W EXP 05/16/203 17,465$3KReduce -56.7%
GOVXW Geovax Labs Inc. -CW25 *W EXP 09/29/202 53,960$3KNo change
EMCWF Embrace Change Acquisitio-26 *W EXP 10/25/202 65,399$3KReduce -4.4%
POLEW Andretti Acquisition Corp.-29 *W EXP 06/01/203 13,300$2KNo change
OAKUW Oak Woods Acquisition -28 *W EXP 99/99/999 60,094$2KReduce -5.5%
BNCWW Cea Industries Inc. -CW27 *W EXP 02/11/202 100,000$1KNo change
BUJAW Bukit Jalil Global Acquis-28 *W EXP 12/30/202 38,826$1KReduce -13.7%
RMSGW Real Messenger Corp.-28 *W EXP 11/19/202 44,105$1KReduce -29.1%
DISTW Distoken Acquisition Corp.-28 *W EXP 11/30/202 46,027$1KReduce -2.1%
OSRHW Bellevue Life Sciences-WRNT *W EXP 02/09/202 28,279$1KNew
SVREW Saverone 2014 Ltd. -CW27 *W EXP 06/02/202 40,000$1KNo change
CDTTW Murphy Canyon Acq-CW27 *W EXP 09/22/202 78,958$726No change
HYMCL Hycroft Mining Holding -CW25 *W EXP 10/06/202 15,174$522No change
BENFW Beneficient Co. Group -28 *W EXP 06/07/202 67,109$503No change

Total filed on the 13F, all lines: $208.9M.

Portfolio Sells Q4 2024 → Q1 2025

NNE Nano Nuclear Energy Inc. Sold out 0.00% −11.16
LB Landbridge Co. LLC-A Sold out 0.00% −5.79
ONDS Ondas Inc. Reduce -6.6% 2.46% −4.16
PSQ HOLDINGS INC Sold out 0.00% −3.14
SIDU Sidus Space Inc. Class A Sold out 0.00% −1.27
NVNIF Nvni Group Ltd. Sold out 0.00% −0.69
GDST Goldenstone Acquisition Ltd. Sold out 0.00% −0.67
BUJA Bukit Jalil Global Acquisiti Sold out 0.00% −0.59
OAKU Oak Woods Acquisition Corp. Class A Sold out 0.00% −0.55
IMSR Terrestrial Energy Inc. Sold out 0.00% −0.43
CRGX Cargo Therapeutics Inc. Sold out 0.00% −0.41
GODN Golden Star Acquisition Corp. Sold out 0.00% −0.22
CADL Candel Therapeutics Inc. Sold out 0.00% −0.14
VRCA Verrica Pharmaceuticals Inc. Sold out 0.00% −0.13
PESI Perma-Fix Environmental SVCS Sold out 0.00% −0.12
BIOMX INC Reduce -94.4% 0.00% −0.10
RYVYL INC Sold out 0.00% −0.08
PMN Promis Neurosciences Inc. Reduce -88.6% 0.01% −0.07
MRM Medirom Healthcare Technolog Sold out 0.00% −0.02
OSRHW Bellevue Life Scncs Aqstn Co. Sold out 0.00% −0.00

Portfolio Buys Q4 2024 → Q1 2025

PLUG Plug Power Inc. New 15.96% +15.96
FGMCU FG Merger II Corp. New 3.95% +3.95
HUMA Humacyte Inc. New 3.51% +3.51
DMAAU Drugs Made in America Acquis New 3.37% +3.37
FERAU Fifth Era Acquisition Corp. I New 1.80% +1.80
PLMKU Plum Acquisition Corp. IV New 1.29% +1.29
SNTI Senti Biosciences Inc. New 1.29% +1.29
REEAF Ree Automotive Ltd. Class A New 1.23% +1.23
RIBBU Ribbon Acquisition Corp. New 1.05% +1.05
COLAU Columbus Acquisition Corp. New 1.04% +1.04
ALGS Aligos Therapeutics Inc. New 1.02% +1.02
UYSCU Uy Scuti Acquisition Corp. New 0.90% +0.90
MAYWOOD ACQUISITION CORP New 0.52% +0.52
GNLX Genelux Corp. New 0.33% +0.33
HVIIU Hennessy Capital Investment New 0.31% +0.31
SRZN Surrozen Inc. New 0.27% +0.27
GFL GFL Environmental Inc.-Sub VT New 0.12% +0.12
SINT Sintx Technologies Inc. New 0.08% +0.08

Options Activity Q4 2024 → Q1 2025

NNE Nano Nuclear Energy Inc. put Add +352.3% 149,700 $4.0M
CKPT Checkpoint Therapeutics Inc. put New 37,500 $152K
MVIS Microvision Inc. put Sold out 80,000 $105Kbefore exit

Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.

Notes & Other Activity Q4 2024 → Q1 2025

PURECYCLE TECHNOLOGIES (PCT 7.25 08/15/30) NOTE 7.250% 8/1 · principal Reduce -14.3% 6,000,000 $4.9M
MARXR Mars Acquisition Corp.-Rights RIGHT 99/99/9999 Sold out 155,000 $59Kbefore exit
HUDAR Hudson Acquisition I Corp.-RT RIGHT 99/99/9999 Sold out 197,000 $40Kbefore exit
AQUNR Aquaron Acquisition Corp.-RTS RIGHT 07/15/2026 Sold out 194,000 $33Kbefore exit
GPATW GP-Act III Acq Class A -CW27 *W EXP 05/13/202 Reduce -1.3% 173,972 $32K
WINVR Winvest Acquisition Corp.-RTS RIGHT 99/99/9999 Sold out 290,295 $26Kbefore exit
BLACR Bellevue Life Sciences-RTS RIGHT 02/09/2028 Sold out 156,176 $20Kbefore exit
GDSTR Goldenstone Acquisitio-Right RIGHT 07/15/2026 Sold out 150,000 $20Kbefore exit
GLSTR Global Star Acquisition-RTS RIGHT 99/99/9999 Sold out 120,000 $18Kbefore exit
TNONW Tenon Medical Inc.-28 *W EXP 06/16/202 Reduce -14.8% 851,594 $17K
BRACR Broad Capital Acquis-Right RIGHT 01/10/2027 Sold out 100,000 $14Kbefore exit
CYCUW Cycurion Inc.-CW27 *W EXP 02/13/203 Reduce -20.5% 348,015 $13K
GBBKW Global Blockchain Acq-CW27 *W EXP 05/09/202 Reduce -3.4% 427,592 $13K
VLOSW M3-Brigade Acquisition -30 *W EXP 99/99/999 Reduce -21.0% 27,889 $8K
DHAIW Aurora Technology Acquis -28 *W EXP 04/20/202 Sold out 99,349 $5Kbefore exit
CUBWW Lionheart Holdings - WT *W EXP 06/07/203 Reduce -8.5% 39,510 $5K
GDSTW Goldenstone Acquisitio -CW23 *W EXP 07/15/202 Sold out 107,827 $5Kbefore exit
CGBWF Crown LNG Holdings Ltd.-28 *W EXP 07/09/202 Sold out 136,232 $4Kbefore exit
EGUVF Evergreen Corporation -CW27 *W EXP 02/08/202 Sold out 147,002 $4Kbefore exit
MACIW Melar Acquisition Corp. I -29 *W EXP 06/01/203 Reduce -29.5% 28,832 $4K
WINVW Winvest Acquisition -CW23 *W EXP 08/09/202 Sold out 257,929 $4Kbefore exit
TETWF Technology & Telecommuni -27 *W EXP 04/15/202 Sold out 178,270 $3Kbefore exit
VACHW Voyager Acquisition Corp. -CW *W EXP 05/16/203 Reduce -56.7% 17,465 $3K
EMCWF Embrace Change Acquisitio-26 *W EXP 10/25/202 Reduce -4.4% 65,399 $3K
IMSRW HCM II Acquisition Corp. - 29 *W EXP 99/99/999 Sold out 18,868 $2Kbefore exit
OAKUW Oak Woods Acquisition -28 *W EXP 99/99/999 Reduce -5.5% 60,094 $2K
BUJAW Bukit Jalil Global Acquis-28 *W EXP 12/30/202 Reduce -13.7% 38,826 $1K
RMSGW Real Messenger Corp.-28 *W EXP 11/19/202 Reduce -29.1% 44,105 $1K
KVAWF Keen Vision Acquisition C-28 *W EXP 03/15/202 Sold out 28,059 $1Kbefore exit
DISTW Distoken Acquisition Corp.-28 *W EXP 11/30/202 Reduce -2.1% 46,027 $1K
OSRHW Bellevue Life Sciences-WRNT *W EXP 02/09/202 New 28,279 $1K
FTIIW Futuretech II Acq -CW27 *W EXP 08/18/202 Sold out 41,559 $640before exit
AIMWF Aimfinity Investment-CW27 *W EXP 99/99/999 Sold out 21,000 $147before exit
PARAW 7GC & Co. Holdings Class A -CW26 *W EXP 12/14/202 Sold out 11,072 $132before exit

Bonds, preferreds, convertibles and warrants; not part of the stock holdings or percentages above.

All Filings

QuarterPositions13F Reported ValueTop Holdings
Q2 2026 197$425.0MFLUT, AMC, MGTX, TSHA, OTAI.U
Q1 2026 165$354.0MSLDP, FLUT, IONQ, CMPS, LAES
Q4 2025 120$261.6MFLUT, FG MERGER II CORP, JACS, DMAA, DMIIU
Q3 2025Amended 112$301.2MFLUT, IBRX, NNE, DFDV, FG MERGER II CORP
Q2 2025 92$309.2MFLUT, ACHR, NA, NNE, AMSC
Q1 2025 67$195.3MFLUT, PLUG, FGMCU, JACS.U, HUMA
Q4 2024 66$186.0MFLUT, NNE, ONDS, LB, JACS.U
Q3 2024 55$125.9MFLUT, SOC, GPAT, FVNNU, FSHP