Nierenberg Investment Management Company, LLC 13F holdings, Q3 2025
Holdings as of September 30, 2025 · filings on SEC EDGAR · latest filing →
Nierenberg Investment Management Company, LLC disclosed 40 US equity positions worth $180.9m in its Q3 2025 13F filing. The largest position was PTB at 28.1% of the reported book, followed by EQT and 07WA. Against the Q2 2025 filing, it opened 5 new positions, added to 4 and reduced 5 among the top 40 holdings.
What did Nierenberg Investment Management Company, LLC own in Q3 2025? Top 40 positions
| # | Stock | Sector | Weight | Value | Shares | Δ shares | vs Q2 2025 |
|---|---|---|---|---|---|---|---|
| 1 | PTB POTBELLY CORP | 28.1% | $50.8m | 2,980,564 | 0% | held | |
| 2 | EQT EQT CORP | Energy | 16.1% | $29.2m | 536,693 | 0% | held |
| 3 | 07WA MR COOPER GROUP INC | 14.7% | $26.6m | 126,121 | -57% | reduced | |
| 4 | LYFT LYFT INC | Technology | 9.9% | $17.9m | 813,555 | 1812% | added |
| 5 | RVSB RIVERVIEW BANCORP INC | Financial Services | 6.0% | $10.9m | 2,032,775 | 5% | added |
| 6 | CRTO CRITEO S A | 5.3% | $9.6m | 424,959 | -21% | reduced | |
| 7 | GDOT GREEN DOT CORP | Financial Services | 2.5% | $4.6m | 339,110 | 0% | held |
| 8 | BKD BROOKDALE SR LIVING INC | Healthcare | 1.9% | $3.5m | 410,110 | 0% | held |
| 9 | ADTN ADTRAN HOLDINGS INC | Technology | 1.8% | $3.2m | 343,110 | 0% | held |
| 10 | KBR KBR INC | Industrials | 1.4% | $2.5m | 53,710 | 0% | held |
| 11 | CNXC CONCENTRIX CORP | Technology | 1.3% | $2.3m | 50,480 | 0% | held |
| 12 | DHC DIVERSIFIED HEALTHCARE TR | 1.1% | $2.0m | 456,110 | 0% | held | |
| 13 | ECVT ECOVYST INC | Basic Materials | 1.1% | $2.0m | 228,810 | 0% | held |
| 14 | MTCH MATCH GROUP INC NEW | Communication Services | 1.1% | $2.0m | 56,680 | 0% | held |
| 15 | EXE EXPAND ENERGY CORPORATION | Energy | 0.9% | $1.7m | 15,555 | 0% | held |
| 16 | TPC TUTOR PERINI CORP | Industrials | 0.9% | $1.6m | 24,680 | -45% | reduced |
| 17 | DXC DXC TECHNOLOGY CO | Technology | 0.8% | $1.4m | 99,555 | 634% | added |
| 18 | RRC RANGE RES CORP | Energy | 0.6% | $1.1m | 29,555 | 0% | held |
| 19 | SEB SEABOARD CORP DEL | Industrials | 0.6% | $1.0m | 286 | 0% | held |
| 20 | PLPC PREFORMED LINE PRODS CO | Industrials | 0.5% | $893.5k | 4,555 | 0% | held |
| 21 | BFH BREAD FINANCIAL HOLDINGS INC | Financial Services | 0.5% | $857.7k | 15,380 | 0% | held |
| 22 | HOS HELIX ENERGY SOLUTIONS GRP I | 0.5% | $816.4k | 124,450 | 0% | held | |
| 23 | OSK OSHKOSH CORP | Industrials | 0.4% | $745.8k | 5,750 | 0% | held |
| 24 | OIS OIL STS INTL INC | Energy | 0.4% | $676.0k | 111,555 | 0% | held |
| 25 | TTGT TECHTARGET INC | Technology | 0.4% | $648.1k | 111,555 | – | new |
| 26 | ARHS ARHAUS INC | Consumer Cyclical | 0.3% | $630.5k | 59,310 | 0% | held |
| 27 | CLFD CLEARFIELD INC | Technology | 0.3% | $567.6k | 16,510 | -52% | reduced |
| 28 | FLR FLUOR CORP NEW | Industrials | 0.2% | $275.8k | 6,555 | 0% | held |
| 29 | OSUR ORASURE TECHNOLOGIES INC | Healthcare | 0.1% | $143.0k | 44,555 | 286% | added |
| 30 | ACH OWENS & MINOR INC NEW | Healthcare | 0.1% | $132.3k | 27,555 | – | new |
| 31 | WNC WABASH NATL CORP | Industrials | 0.1% | $123.9k | 12,555 | -84% | reduced |
| 32 | GIFI GULF IS FABRICATION INC | 0.1% | $123.2k | 17,555 | 0% | held | |
| 33 | FORR FORRESTER RESH INC | Industrials | 0.1% | $122.5k | 11,555 | – | new |
| 34 | SCYX SCYNEXIS INC | 0.0% | $58.2k | 75,555 | 0% | held | |
| 35 | CTMX CYTOMX THERAPEUTICS INC | Healthcare | 0.0% | $40.0k | 12,555 | 0% | held |
| 36 | TALK TALKSPACE INC | Healthcare | 0.0% | $31.9k | 11,555 | – | new |
| 37 | EB4 EVENTBRITE INC | 0.0% | $29.1k | 11,555 | – | new | |
| 38 | NNBR NN INC | 0.0% | $27.9k | 13,555 | 0% | held | |
| 39 | WTI W & T OFFSHORE INC | Energy | 0.0% | $24.7k | 13,555 | 0% | held |
| 40 | OLAPLEX HLDGS INC | 0.0% | $16.4k | 12,555 | 0% | held |
Weights are shares of the reported long US equity book (options excluded). Values are as filed, normalised to whole dollars. Share changes compare against the immediately preceding filing only.