Nierenberg Investment Management Company, LLC 13F holdings
Nierenberg Investment Management Company, LLC reported 35 positions with a total reported value of $201.4M as of 2026-06-30, in its 13F for Q2 2026, filed 2026-08-11. Top holdings by reported value: ISHARES TR (23.0%), EQT EQT CORP (14.1%), CRTO CRITEO S A (9.6%), LYFT LYFT INC (9.4%), CART MAPLEBEAR INC (6.9%). Against 2026-03-31 it opened 4 new positions and exited 13. Next 13F due by 2026-11-14, the legal deadline 45 days after the quarter ending 2026-09-30.
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Top holdings
25 largest of 35 positions · reported value as of 2026-06-30
| Holding | Shares | Reported value | % of portfolio |
|---|---|---|---|
| ISHARES TR | 461,047 | $46.4M | 23.0% |
| EQT EQT CORP | 533,363 | $28.4M | 14.1% |
| CRTO CRITEO S A | 1,052,787 | $19.2M | 9.6% |
| LYFT LYFT INC | 1,295,623 | $18.9M | 9.4% |
| CART MAPLEBEAR INC | 291,888 | $13.8M | 6.9% |
| KBR KBR INC | 386,443 | $13.3M | 6.6% |
| RVSB RIVERVIEW BANCORP INC | 2,032,775 | $11.0M | 5.5% |
| FCN FTI CONSULTING INC | 73,887 | $11.0M | 5.5% |
| ROCKET COS INC | 429,631 | $6.8M | 3.4% |
| GDOT GREEN DOT CORP | 339,110 | $4.6M | 2.3% |
| DHC DIVERSIFIED HEALTHCARE TR | 456,110 | $4.2M | 2.1% |
| BKD BROOKDALE SR LIVING INC | 255,110 | $4.1M | 2.0% |
| FIVN FIVE9 INC | 135,810 | $2.9M | 1.4% |
| TNDM TANDEM DIABETES CARE INC | 158,910 | $2.4M | 1.2% |
| HAE HAEMONETICS CORP MASS | 26,280 | $2.0M | 1.0% |
| GREENLIGHT CAP RE LTD | 102,510 | $1.7M | 0.8% |
| REI RING ENERGY INC | 1,399,555 | $1.5M | 0.8% |
| CNXC CONCENTRIX CORP | 64,480 | $1.4M | 0.7% |
| EXE EXPAND ENERGY CORPORATION | 15,555 | $1.4M | 0.7% |
| FORRESTER RESH INC | 131,110 | $1.1M | 0.5% |
| HELIX ENERGY SOLUTIONS GRP I | 124,450 | $1.1M | 0.5% |
| DXC DXC TECHNOLOGY CO | 102,510 | $907.2K | 0.5% |
| OSK OSHKOSH CORP | 5,750 | $882.5K | 0.4% |
| TTEC TTEC HLDGS INC | 255,555 | $495.8K | 0.2% |
| TTGT TECHTARGET INC | 136,910 | $492.9K | 0.2% |
SEC FORM 13F · Q2 2026 · VALUES AS REPORTED, NOT PRICES
New positions this quarter
Held at 2026-06-30, not at 2026-03-31 · 4 in all · reported value as of 2026-06-30
Sold out
Held at 2026-03-31, gone by 2026-06-30 · 13 in all · reported value as of 2026-03-31
| Holding | Shares 2026-03-31 | Reported value | % of portfolio then |
|---|---|---|---|
| GREENLIGHT CAPITAL RE LTD | 102,510 | $1.8M | 0.9% |
| CCRN CROSS CTRY HEALTHCARE INC | 144,555 | $1.4M | 0.7% |
| ADTN ADTRAN HOLDINGS INC | 93,110 | $1.2M | 0.6% |
| OCEANFIRST FINL CORP | 39,555 | $713.6K | 0.4% |
| HOPE HOPE BANCORP INC | 63,555 | $709.9K | 0.4% |
| CLFD CLEARFIELD INC | 16,510 | $437.0K | 0.2% |
| PLAB PHOTRONICS INC | 6,330 | $255.8K | 0.1% |
| BFH BREAD FINANCIAL HOLDINGS INC | 3,380 | $253.1K | 0.1% |
| PTLO PORTILLOS INC | 33,555 | $177.5K | <0.1% |
| WABASH NATL CORP | 12,555 | $108.2K | <0.1% |
| SCYX SCYNEXIS INC | 75,555 | $69.3K | <0.1% |
| ACH ACCENDRA HEALTH INC | 27,555 | $62.8K | <0.1% |
| OLAPLEX HLDGS INC | 12,555 | $25.5K | <0.1% |
Biggest increases and decreases
Positions held at both quarter ends, by change in shares · reported value as of 2026-06-30
Increases
| Holding | Shares 2026-03-31 | Shares 2026-06-30 | Change | Reported value |
|---|---|---|---|---|
| FCN FTI CONSULTING INC | 9,780 | 73,887 | +655.5% | $11.0M |
| TNDM TANDEM DIABETES CARE INC | 79,510 | 158,910 | +99.9% | $2.4M |
Decreases
| Holding | Shares 2026-03-31 | Shares 2026-06-30 | Change | Reported value |
|---|---|---|---|---|
| ISHARES TR | 550,597 | 461,047 | -16.3% | $46.4M |
| TTGT TECHTARGET INC | 202,910 | 136,910 | -32.5% | $492.9K |
CIK 1282683 · 13F FILINGS ON EDGAR · INFORMATIONAL ONLY
