Nierenberg Investment Management Company, LLC Q3 2025 Filing
Filed November 12, 2025
Portfolio Value
$234.0B
Holdings
50
Report Date
Q3 2025
Filing Type
13F-HR
All Holdings (50 positions)
| # | Stock | Shares | Value | % Portfolio | Type |
|---|---|---|---|---|---|
| 1 | PTBPOTBELLY CORP | 2,980,564 | $50.8B | 21.70% | |
| 2 | EQTEQT CORP | 536,693 | $29.2B | 12.48% | |
| 3 | 07WAMR COOPER GROUP INC | 126,121 | $26.6B | 11.36% | |
| 4 | LYFTLYFT INC | 813,555 | $17.9B | 7.65% | |
| 5 | SPYSPDR S&P 500 ETF TR | 25,000 | $16.7B | 7.12% | Put |
| 6 | RVSBRIVERVIEW BANCORP INC | 2,032,775 | $10.9B | 4.67% | |
| 7 | NDQINVESCO QQQ TR | 17,100 | $10.3B | 4.39% | Put |
| 8 | CRTOCRITEO S A | 424,959 | $9.6B | 4.10% | |
| 9 | GEVGE VERNOVA INC | 11,200 | $6.9B | 2.94% | Put |
| 10 | GDOTGREEN DOT CORP | 339,110 | $4.6B | 1.95% | |
| 11 | NVDANVIDIA CORPORATION | 22,800 | $4.3B | 1.82% | Put |
| 12 | B7SBROOKDALE SR LIVING INC | 410,110 | $3.5B | 1.48% | |
| 13 | AVGOBROADCOM INC | 10,200 | $3.4B | 1.44% | Put |
| 14 | ADTNADTRAN HOLDINGS INC | 343,110 | $3.2B | 1.38% | |
| 15 | VRTVERTIV HOLDINGS CO | 21,200 | $3.2B | 1.37% | Put |
| 16 | EXEEXPAND ENERGY CORPORATION | 29,555 | $3.1B | 1.34% | Call |
| 17 | ANETARISTA NETWORKS INC | 18,600 | $2.7B | 1.16% | Put |
| 18 | K6BKBR INC | 53,710 | $2.5B | 1.09% | |
| 19 | CEGCONSTELLATION ENERGY CORP | 7,100 | $2.3B | 1.00% | Put |
| 20 | CNXCCONCENTRIX CORP | 50,480 | $2.3B | 1.00% | |
| 21 | DHCDIVERSIFIED HEALTHCARE TR | 456,110 | $2.0B | 0.86% | |
| 22 | ECVTECOVYST INC | 228,810 | $2.0B | 0.86% | |
| 23 | MTCHMATCH GROUP INC NEW | 56,680 | $2.0B | 0.86% | |
| 24 | TPCTUTOR PERINI CORP | 24,680 | $1.6B | 0.69% | |
| 25 | DXCDXC TECHNOLOGY CO | 99,555 | $1.4B | 0.58% | |
| 26 | RRCRANGE RES CORP | 29,555 | $1.1B | 0.48% | |
| 27 | SEBSEABOARD CORP DEL | 286 | $1.0B | 0.45% | |
| 28 | PLPCPREFORMED LINE PRODS CO | 4,555 | $893.5M | 0.38% | |
| 29 | BFHBREAD FINANCIAL HOLDINGS INC | 15,380 | $857.7M | 0.37% | |
| 30 | ACHOWENS & MINOR INC NEW | 177,555 | $852.3M | 0.36% | Put |
| 31 | CTVHELIX ENERGY SOLUTIONS GRP I | 124,450 | $816.4M | 0.35% | |
| 32 | OSKOSHKOSH CORP | 5,750 | $745.8M | 0.32% | |
| 33 | OISOIL STS INTL INC | 111,555 | $676.0M | 0.29% | |
| 34 | TTGTTECHTARGET INC | 111,555 | $648.1M | 0.28% | |
| 35 | ARHSARHAUS INC | 59,310 | $630.5M | 0.27% | |
| 36 | BRYBERRY CORP | 160,000 | $604.8M | 0.26% | Call |
| 37 | ETNEATON CORP PLC | 1,600 | $598.8M | 0.26% | Put |
| 38 | CLFDCLEARFIELD INC | 16,510 | $567.6M | 0.24% | |
| 39 | FLRFLUOR CORP NEW | 6,555 | $275.8M | 0.12% | |
| 40 | EP3ORASURE TECHNOLOGIES INC | 44,555 | $143.0M | 0.06% | |
| 41 | WNCWABASH NATL CORP | 12,555 | $123.9M | 0.05% | |
| 42 | GIFIGULF IS FABRICATION INC | 17,555 | $123.2M | 0.05% | |
| 43 | FORRFORRESTER RESH INC | 11,555 | $122.5M | 0.05% | |
| 44 | SCYXSCYNEXIS INC | 75,555 | $58.2M | 0.02% | |
| 45 | CTMXCYTOMX THERAPEUTICS INC | 12,555 | $40.0M | 0.02% | |
| 46 | TALKTALKSPACE INC | 11,555 | $31.9M | 0.01% | |
| 47 | EBEVENTBRITE INC | 11,555 | $29.1M | 0.01% | |
| 48 | NNBRNN INC | 13,555 | $27.9M | 0.01% | |
| 49 | WTIW & T OFFSHORE INC | 13,555 | $24.7M | 0.01% | |
| 50 | OLPXOLAPLEX HLDGS INC | 12,555 | $16.4M | 0.01% |