Q3 2025 · 13F-HR
Nierenberg Investment Management Company, LLCholdings as filed
Filed 2025-11-12 · accession 0001941040-25-000623
$234.0M
Reported value
52
Positions
2025-09-30
Period end
The Brief · Nierenberg Investment Management Company, LLC · Q3 2025
AI · grounded in 13F
Nierenberg Investment Management Company, LLC established a new position in Potbelly Corp PTB valued at $50.8M. The fund also initiated new stakes in EQT Corp EQT for $29.2M and Mr Cooper Group Inc 07WA for $26.6M. Additional new positions include Lyft Inc LYFT and SPDR S&P 500 ETF TR SPY.
Holdings as filed
| CUSIP | Ticker | Issuer | Value | % port. | Shares | Class | Voting |
|---|---|---|---|---|---|---|---|
| 73754Y100 | PTB | POTBELLY CORP | $50.8M | 21.7% | 2,980,564 | Common | SHARED |
| 26884L109 | EQT | EQT CORP | $29.2M | 12.5% | 536,693 | Common | SHARED |
| 62482R107 | 07WA | MR COOPER GROUP INC | $26.6M | 11.4% | 126,121 | Common | SHARED |
| 55087P104 | LYFT | LYFT INC | $17.9M | 7.65% | 813,555 | Common | SHARED |
| 78462F103 | SPY | SPDR S&P 500 ETF TR | $16.7M | 7.12% | 25,000 | PUT | SOLE |
| 769397100 | RVSB | RIVERVIEW BANCORP INC | $10.9M | 4.67% | 2,032,775 | Common | SHARED |
| 46090E103 | QQQ | INVESCO QQQ TR | $10.3M | 4.39% | 17,100 | PUT | SOLE |
| 226718104 | CRTO | CRITEO S A | $9.6M | 4.10% | 424,959 | Common | SHARED |
| 36828A101 | GEV | GE VERNOVA INC | $6.9M | 2.94% | 11,200 | PUT | SOLE |
| 39304D102 | GDOT | GREEN DOT CORP | $4.6M | 1.95% | 339,110 | Common | SHARED |
| 67066G104 | NVDA | NVIDIA CORPORATION | $4.3M | 1.82% | 22,800 | PUT | SOLE |
| 112463104 | BKD | BROOKDALE SR LIVING INC | $3.5M | 1.48% | 410,110 | Common | SHARED |
| 11135F101 | AVGO | BROADCOM INC | $3.4M | 1.44% | 10,200 | PUT | SOLE |
| 00486H105 | ADTN | ADTRAN HOLDINGS INC | $3.2M | 1.38% | 343,110 | Common | SHARED |
| 92537N108 | VRT | VERTIV HOLDINGS CO | $3.2M | 1.37% | 21,200 | PUT | SOLE |
| 040413205 | ANET | ARISTA NETWORKS INC | $2.7M | 1.16% | 18,600 | PUT | SOLE |
| 48242W106 | KBR | KBR INC | $2.5M | 1.09% | 53,710 | Common | SHARED |
| 21037T109 | CEG | CONSTELLATION ENERGY CORP | $2.3M | 1.00% | 7,100 | PUT | SOLE |
| 20602D101 | CNXC | CONCENTRIX CORP | $2.3M | 1.00% | 50,480 | Common | SHARED |
| 25525P107 | DHC | DIVERSIFIED HEALTHCARE TR | $2.0M | 0.86% | 456,110 | Common | SHARED |
| 27923Q109 | ECVT | ECOVYST INC | $2.0M | 0.86% | 228,810 | Common | SHARED |
| 57667L107 | MTCH | MATCH GROUP INC NEW | $2.0M | 0.86% | 56,680 | Common | SHARED |
| 165167735 | EXE | EXPAND ENERGY CORPORATION | $1.7M | 0.71% | 15,555 | Common | SOLE |
| 901109108 | TPC | TUTOR PERINI CORP | $1.6M | 0.69% | 24,680 | Common | SHARED |
| 165167735 | EXE | EXPAND ENERGY CORPORATION | $1.5M | 0.64% | 14,000 | CALL | SOLE |
| 23355L106 | DXC | DXC TECHNOLOGY CO | $1.4M | 0.58% | 99,555 | Common | SOLE |
| 75281A109 | RRC | RANGE RES CORP | $1.1M | 0.48% | 29,555 | Common | SOLE |
| 811543107 | SEB | SEABOARD CORP DEL | $1.0M | 0.45% | 286 | Common | SHARED |
| 740444104 | PLPC | PREFORMED LINE PRODS CO | $893,463 | 0.38% | 4,555 | Common | SOLE |
| 018581108 | BFH | BREAD FINANCIAL HOLDINGS INC | $857,743 | 0.37% | 15,380 | Common | SHARED |
| 42330P107 | HLX | HELIX ENERGY SOLUTIONS GRP I | $816,392 | 0.35% | 124,450 | Common | SHARED |
| 688239201 | OSK | OSHKOSH CORP | $745,775 | 0.32% | 5,750 | Common | SHARED |
| 690732102 | ACH | OWENS & MINOR INC NEW | $720,000 | 0.31% | 150,000 | PUT | SOLE |
| 678026105 | OIS | OIL STS INTL INC | $676,023 | 0.29% | 111,555 | Common | SOLE |
| 87874R308 | TTGT | TECHTARGET INC | $648,135 | 0.28% | 111,555 | Common | SOLE |
| 04035M102 | ARHS | ARHAUS INC | $630,465 | 0.27% | 59,310 | Common | SHARED |
| 08579X101 | BRY | BERRY CORP | $604,800 | 0.26% | 160,000 | CALL | SOLE |
| G29183103 | ETN | EATON CORP PLC | $598,800 | 0.26% | 1,600 | PUT | SOLE |
| 18482P103 | CLFD | CLEARFIELD INC | $567,614 | 0.24% | 16,510 | Common | SHARED |
| 343412102 | FLR | FLUOR CORP NEW | $275,769 | 0.12% | 6,555 | Common | SOLE |
| 68554V108 | OSUR | ORASURE TECHNOLOGIES INC | $143,022 | 0.06% | 44,555 | Common | SOLE |
| 690732102 | ACH | OWENS & MINOR INC NEW | $132,264 | 0.06% | 27,555 | Common | SOLE |
| 929566107 | WNC | WABASH NATL CORP | $123,918 | 0.05% | 12,555 | Common | SOLE |
| 402307102 | GIFI | GULF IS FABRICATION INC | $123,236 | 0.05% | 17,555 | Common | SOLE |
| 346563109 | FORR | FORRESTER RESH INC | $122,483 | 0.05% | 11,555 | Common | SOLE |
| 811292200 | SCYX | SCYNEXIS INC | $58,177 | 0.02% | 75,555 | Common | SOLE |
| 23284F105 | CTMX | CYTOMX THERAPEUTICS INC | $40,050 | 0.02% | 12,555 | Common | SOLE |
| 87427V103 | TALK | TALKSPACE INC | $31,892 | 0.01% | 11,555 | Common | SOLE |
| 29975E109 | EB4 | EVENTBRITE INC | $29,119 | 0.01% | 11,555 | Common | SOLE |
| 629337106 | NNBR | NN INC | $27,923 | 0.01% | 13,555 | Common | SOLE |
| 92922P106 | WTI | W & T OFFSHORE INC | $24,670 | 0.01% | 13,555 | Common | SOLE |
| 679369108 | OLPX | OLAPLEX HLDGS INC | $16,447 | 0.01% | 12,555 | Common | SOLE |
Source: SEC EDGAR · raw 13F holdings as filed. The Class column shows the option type when reported (Put/Call) or Common when the issuer's equity is held directly. 13F discloses long positions only.