Nierenberg Investment Management Company, LLC In its 13F for Q3 2024 (holdings as of September 30, 2024, filed November 13, 2024), Nierenberg Investment Management Company, LLC reported 47 stock positions worth $166.9 million . Its top holding was Mr Cooper (COOP) at 20.0% of the portfolio, followed by Potbelly (PBPB, 14.9% ) and Fluor (FLR, 12.4% ). Compared with Q2 2024, it opened 9 new positions, sold out of 7, added to 10 and reduced 8. The biggest buy was Riverview Bancorp (RVSB, shares +164% ) and the biggest sale Mr Cooper (COOP, shares −29% ).
Location Camas, WA
CIK 0001282683
Portfolio Value $166.9M (Q3 2024) Holdings 47 stocks · $166.9M Holdings quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock % Of Portfolio ▼ Shares Held Total Value Change vs Q2 2024 COOP Mr Cooper Group Inc. 363,004 $33.5M Reduce -29.4% PBPB Potbelly Corp. 2,980,564 $24.9M Add +5.3% FLR Fluor Corp. 432,058 $20.6M Reduce -0.3% EQT Eqt Corp. 536,693 $19.7M Add +5.5% CTLP Cantaloupe Inc. 2,641,658 $19.5M No change EBC Eastern Bankshares Inc. 613,088 $10.0M No change RVSB Riverview Bancorp Inc. 1,060,600 $5.0M Add +163.6% KBR KBR Inc. 50,710 $3.3M No change TPC Tutor Perini Corp. 91,680 $2.5M Reduce -10.7% CLFD Clearfield Inc. 57,510 $2.2M No change MTCH Match Group Inc. 57,230 $2.2M Add +3.0% ADTN Adtran Holdings Inc. 343,110 $2.0M New DHC Diversified Healthcare Trust 456,110 $1.9M No change CNXC Concentrix Corp. 34,310 $1.8M Add +22.9% ECVT Ecovyst Inc. 227,610 $1.6M Add +24.6% SWN Southwestern Energy Co. 199,555 $1.4M No change HOS Hornbeck Offshore Services I filed as HELIX ENERGY SOLUTIONS GRP I 113,450 $1.3M Add +1.7% HOPE Hope Bancorp Inc. 99,555 $1.3M No change FFIC Flushing Financial Corp. 77,555 $1.1M No change BKD Brookdale Senior Living Inc. 160,110 $1.1M No change BFH Bread Financial Holdings Inc. 20,680 $984K Reduce -2.5% CYH Community Health Systems Inc. 155,555 $944K Reduce -11.4% HELE Helen of Troy Ltd. 15,080 $933K Add +15.3% RRC Range Resources Corp. 29,555 $909K No change GIFI Gulf Island Fabrication Inc. 155,555 $877K Add +39.4% PREMIER INC-CLASS A 37,010 $740K No change ARHS Arhaus Inc. 59,310 $730K No change APP AppLovin Corp. Class A 4,555 $595K Reduce -39.7% PLAB Photronics Inc. 23,330 $578K Add +3.4% MTRX Matrix Service Co. 49,555 $571K Reduce -50.2% OSK Oshkosh Corp. 5,555 $557K New SSUP Superior Industries Intl 111,555 $339K Reduce -68.1% DXC DXC Technology Co. 13,555 $281K No change HOFT Hooker Furnishings Corp. 11,555 $209K New ARRY Array Technologies Inc. 19,555 $129K New UFI Unifi Inc. 17,555 $129K New PFIE Profire Energy Inc. 72,555 $122K New SCYX Scynexis Inc. 75,555 $113K No change ENZB Enzo Biochem Inc. 88,555 $99K No change FFWM First Foundation Inc. 15,555 $97K No change NAGE Niagen Bioscience Inc. filed as CHROMADEX CORP 11,555 $42K No change OLPX Olaplex Holdings Inc. 12,555 $30K No change WTI W&T Offshore Inc. 13,555 $29K No change EXE Expand Energy Corp. filed as CHESAPEAKE ENERGY CORP 255 $21K New VISN Vistance Networks Inc. filed as COMMSCOPE HLDG CO INC 2,555 $16K New CTMX Cytomx Therapeutics Inc. 12,555 $15K No change ALGT Allegiant Travel Co. 125 $7K New
Options reported separately and not counted above: EQT calls ($4.3M), BFH calls ($1.2M), CYH calls ($1.2M), ADTN calls ($1.2M), EXE calls ($1.2M), VISN calls ($306K), ALGT calls ($220K).
Portfolio Sells Q2 2024 → Q3 2024 Portfolio Sells quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2024 % Of Portfolio Change To Portfolio ▲ COOP Mr Cooper Group Inc. Reduce -29.4% 20.05% −4.43 FTK Flotek Industries Inc. Sold out 0.00% −3.59 FHN First Horizon Corp. Sold out 0.00% −1.03 INSW International Seaways Inc. Sold out 0.00% −0.71 SSUP Superior Industries Intl Reduce -68.1% 0.20% −0.46 VBTX Veritex Holdings Inc. Sold out 0.00% −0.37 SND Smart Sand Inc. Sold out 0.00% −0.28 MTRX Matrix Service Co. Reduce -50.2% 0.34% −0.24 DAN Dana Inc. Sold out 0.00% −0.15 DZSIQ DZS Inc. Sold out 0.00% −0.12 APP AppLovin Corp. Class A Reduce -39.7% 0.36% −0.01 BFH Bread Financial Holdings Inc. Reduce -2.5% 0.59% +0.04 TPC Tutor Perini Corp. Reduce -10.7% 1.49% +0.18 CYH Community Health Systems Inc. Reduce -11.4% 0.57% +0.22 FLR Fluor Corp. Reduce -0.3% 12.35% +1.28
Portfolio Buys Q2 2024 → Q3 2024 Portfolio Buys quarter Q2 2026 Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024 Q1 2024
Stock Change vs Q2 2024 % Of Portfolio Change To Portfolio ▼ RVSB Riverview Bancorp Inc. Add +163.6% 2.99% +2.05 PBPB Potbelly Corp. Add +5.3% 14.89% +1.58 ADTN Adtran Holdings Inc. New 1.22% +1.22 EQT Eqt Corp. Add +5.5% 11.78% +0.76 OSK Oshkosh Corp. New 0.33% +0.33 MTCH Match Group Inc. Add +3.0% 1.30% +0.31 GIFI Gulf Island Fabrication Inc. Add +39.4% 0.53% +0.13 HOFT Hooker Furnishings Corp. New 0.13% +0.13 ARRY Array Technologies Inc. New 0.08% +0.08 UFI Unifi Inc. New 0.08% +0.08 PFIE Profire Energy Inc. New 0.07% +0.07 PLAB Photronics Inc. Add +3.4% 0.35% +0.02 CNXC Concentrix Corp. Add +22.9% 1.05% +0.02 EXE Expand Energy Corp. New 0.01% +0.01 VISN Vistance Networks Inc. New 0.01% +0.01 ALGT Allegiant Travel Co. New 0.00% +0.00 ECVT Ecovyst Inc. Add +24.6% 0.93% −0.03 HOS Hornbeck Offshore Services I Add +1.7% 0.75% −0.03 HELE Helen of Troy Ltd. Add +15.3% 0.56% −0.15
Options Activity Q2 2024 → Q3 2024 Security Type Change vs Q2 2024 Underlying Shares Value ▼ CYH Community Health Systems Inc. call Add +0.1% 200,100 $1.2M ADTN Adtran Holdings Inc. call New 200,000 $1.2M SSUP Superior Industries Intl call Sold out 111,000 $361Kbefore exit VISN Vistance Networks Inc. call Reduce -73.7% 50,000 $306K DZSIQ DZS Inc. call Sold out 44,400 $52Kbefore exit
Calls and puts are listed by the shares they cover; their value is not part of the stock holdings above.
All Filings Quarter Positions 13F Reported Value Top Holdings Q2 2026 35 $201.4M SGOV, EQT, CRTO, LYFT, CART Q1 2026 44 $200.8M SGOV, EQT, CRTO, LYFT, KBR Q4 2025 43 $198.2M SGOV, EQT, RKT, CRTO, LYFT Q3 2025 40 $180.9M PBPB, EQT, COOP, LYFT, RVSB Q2 2025 39 $171.4M COOP, PBPB, EQT, CRTO, RVSB Q1 2025 47 $171.2M COOP, EQT, PBPB, CTLP, CRTO Q4 2024 46 $170.9M COOP, PBPB, CTLP, EQT, EBC Q3 2024 47 $166.9M COOP, PBPB, FLR, EQT, CTLP Q2 2024 45 $170.6M COOP, PBPB, FLR, EQT, CTLP Q1 2024 35 $171.0M COOP, PBPB, FLR, EQT, CTLP