Nierenberg Investment Management Company, LLC — 13F Holdings & Portfolio
CIK 1282683 · latest 13F-HR filed 2026-08-11
Nierenberg Investment Management Company, LLC manages $201.4M in 13F-reported U.S. long-equity assets across 35 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are SGOV (23.04%), EQT (14.08%), CRTO (9.55%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 3 new positions, exited 12, added to 15, and trimmed 13.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
CAMAS, WA 98607
$201.4M
Long-equity book
35
Distinct positions
2026-06-30
Filed 2026-08-11
+3 / −12 / ↑15 / ↓13
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- FTI CONSULTING INC$9.3M +536.8%
- MAPLEBEAR INC$2.9M +26.4%
- LYFT INC$1.7M +9.8%
- DIVERSIFIED HEALTHCARE TR$1.2M +40.1%
- TANDEM DIABETES CARE INC$873.7K +57.3%
Top Trims
- ISHARES TR-$9.0M -16.3%
- EQT CORP-$5.6M -16.5%
- KBR INC-$900.4K -6.3%
- DXC TECHNOLOGY CO-$381.3K -29.6%
- CONCENTRIX CORP-$319.5K -18.1%
Exited Positions
- CROSS CTRY HEALTHCARE INC$1.4M
- ADTRAN HOLDINGS INC$1.2M
- OCEANFIRST FINL CORP$713.6K
- HOPE BANCORP INC$709.9K
- CLEARFIELD INC$437.0K
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | ISHARES TR | SGOV | 46436E718 | $46.4M | 23.04% | 461,047 | SH |
| 2 | EQT CORP | EQT | 26884L109 | $28.4M | 14.08% | 533,363 | SH |
| 3 | CRITEO S A | CRTO | 226718104 | $19.2M | 9.55% | 1,052,787 | SH |
| 4 | LYFT INC | LYFT | 55087P104 | $18.9M | 9.40% | 1,295,623 | SH |
| 5 | MAPLEBEAR INC | CART | 565394103 | $13.8M | 6.86% | 291,888 | SH |
| 6 | KBR INC | KBR | 48242W106 | $13.3M | 6.62% | 386,443 | SH |
| 7 | RIVERVIEW BANCORP INC | RVSB | 769397100 | $11.0M | 5.48% | 2,032,775 | SH |
| 8 | FTI CONSULTING INC | FCN | 302941109 | $11.0M | 5.47% | 73,887 | SH |
| 9 | ROCKET COS INC | RKT | 77311W101 | $6.8M | 3.36% | 429,631 | SH |
| 10 | GREEN DOT CORP | GDOT | 39304D102 | $4.6M | 2.27% | 339,110 | SH |
| 11 | DIVERSIFIED HEALTHCARE TR | DHC | 25525P107 | $4.2M | 2.11% | 456,110 | SH |
| 12 | BROOKDALE SR LIVING INC | BKD | 112463104 | $4.1M | 2.04% | 255,110 | SH |
| 13 | FIVE9 INC | FIVN | 338307101 | $2.9M | 1.44% | 135,810 | SH |
| 14 | TANDEM DIABETES CARE INC | TNDM | 875372203 | $2.4M | 1.19% | 158,910 | SH |
| 15 | HAEMONETICS CORP MASS | HAE | 405024100 | $2.0M | 0.98% | 26,280 | SH |
| 16 | GREENLIGHT CAP RE LTD | GLRE | G4095J109 | $1.7M | 0.82% | 102,510 | SH |
| 17 | RING ENERGY INC | REI | 76680V108 | $1.5M | 0.75% | 1,399,555 | SH |
| 18 | CONCENTRIX CORP | CNXC | 20602D101 | $1.4M | 0.72% | 64,480 | SH |
| 19 | EXPAND ENERGY CORPORATION | EXE | 165167735 | $1.4M | 0.70% | 15,555 | SH |
| 20 | FORRESTER RESH INC | FORR | 346563109 | $1.1M | 0.55% | 131,110 | SH |
| 21 | HELIX ENERGY SOLUTIONS GRP I | HLX | 42330P107 | $1.1M | 0.54% | 124,450 | SH |
| 22 | DXC TECHNOLOGY CO | DXC | 23355L106 | $907.2K | 0.45% | 102,510 | SH |
| 23 | OSHKOSH CORP | OSK | 688239201 | $882.5K | 0.44% | 5,750 | SH |
| 24 | TTEC HLDGS INC | TTEC | 89854H102 | $495.8K | 0.25% | 255,555 | SH |
| 25 | TECHTARGET INC | TTGT | 87874R308 | $492.9K | 0.24% | 136,910 | SH |
| 26 | FLUOR CORP | FLR | 343412102 | $343.4K | 0.17% | 6,555 | SH |
| 27 | DHI GROUP INC | DHX | 23331S100 | $313.7K | 0.16% | 84,555 | SH |
| 28 | ORASURE TECHNOLOGIES INC | OSUR | 68554V108 | $247.8K | 0.12% | 55,555 | SH |
| 29 | ARHAUS INC | ARHS | 04035M102 | $103.7K | 0.05% | 12,310 | SH |
| 30 | OIL STS INTL INC | OIS | 678026105 | $92.6K | 0.05% | 11,555 | SH |
| 31 | TALKSPACE INC | TALK | 87427V103 | $60.1K | 0.03% | 11,555 | SH |
| 32 | NN INC | NNBR | 629337106 | $48.7K | 0.02% | 13,555 | SH |
| 33 | CYTOMX THERAPEUTICS INC. | CTMX | 23284F105 | $47.1K | 0.02% | 12,555 | SH |
| 34 | W & T OFFSHORE INC | WTI | 92922P106 | $42.7K | 0.02% | 13,555 | SH |
| 35 | CONDUENT INC | CNDT | 206787103 | $25.6K | 0.01% | 17,555 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-11 | $201.4M | 35 | 0001941040-26-000552 |
| 2026-03-31 | 2026-05-13 | $201.5M | 46 | 0001941040-26-000327 |
| 2025-12-31 | 2026-02-13 | $206.0M | 47 | 0001941040-26-000138 |
| 2025-09-30 | 2025-11-12 | $234.0M | 52 | 0001941040-25-000623 |