Institutional Manager · CIK 0001282683
Nierenberg Investment Management Company, Inc.
Camas, WA · File #028-10859
Latest AUM
$206.0M
Positions
47
Top-10 Concentration
87.3%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| NEW | ISHARES TR | 46436E718 | +640,597 | +$64.3M | $0 |
| EXITED | POTBELLY CORP | 73754Y100 | -2,980,564 | -$50.8M | $0 |
| EXITED | MR COOPER GROUP INC | 62482R107 | -126,121 | -$26.6M | $0 |
| NEW | ROCKET COS INC | 77311W101 | +1,336,631 | +$25.9M | $0 |
| EXITED | SPDR S&P 500 ETF TR | 78462F103 | -25,000 | -$16.7M | $0 |
| EXITED | INVESCO QQQ TR | 46090E103 | -17,100 | -$10.3M | $0 |
| ADD | CRITEO S A | CRTO | +463,929 | +$9.6M | -$845,668 |
| EXITED | NVIDIA CORPORATION | 67066G104 | -22,800 | -$4.3M | $0 |
| EXITED | BROADCOM INC | 11135F101 | -10,200 | -$3.4M | $0 |
| EXITED | ARISTA NETWORKS INC | 040413205 | -18,600 | -$2.7M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202547 pos · $206.0M
- 13F HOLDINGS REPORTQ/E Sep 202552 pos · $234.0M
- 13F HOLDINGS REPORTQ/E Jun 202549 pos · $188.2M
- 13F HOLDINGS REPORTQ/E Mar 202557 pos · $183.2M
- 13F HOLDINGS REPORTQ/E Dec 202451 pos · $180.2M
- 13F HOLDINGS REPORTQ/E Sep 202454 pos · $176.5M
- 13F HOLDINGS REPORTQ/E Jun 202453 pos · $178.7M
- 13F HOLDINGS REPORTQ/E Mar 202444 pos · $179.5M
- 13F HOLDINGS REPORTQ/E Dec 202333 pos · $139.3M
Top 20 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | ISHARES TR | 46436E718 | 640,597 | $64.3M | 31.22% |
| 2 | EQT CORP | EQT | 533,363 | $28.6M | 13.88% |
| 3 | ROCKET COS INC | 77311W101 | 1,336,631 | $25.9M | 12.56% |
| 4 | CRITEO S A | CRTO | 888,888 | $18.3M | 8.89% |
| 5 | LYFT INC | LYFT | 813,555 | $15.8M | 7.65% |
| 6 | RIVERVIEW BANCORP INC | RVSB | 2,032,775 | $10.2M | 4.95% |
| 7 | GE VERNOVA INC | GEV | 7,600 | $5.0M | 2.41% |
| 8 | BROOKDALE SR LIVING INC | 112463104 | 410,110 | $4.4M | 2.15% |
| 9 | GREEN DOT CORP | GDOT | 339,110 | $4.3M | 2.11% |
| 10 | KBR INC | KBR | 73,710 | $3.0M | 1.44% |
| 11 | CONCENTRIX CORP | CNXC | 64,480 | $2.7M | 1.30% |
| 12 | ECOVYST INC | ECVT | 228,810 | $2.2M | 1.08% |
| 13 | DIVERSIFIED HEALTHCARE TR | DHCNL | 456,110 | $2.2M | 1.07% |
| 14 | EXPAND ENERGY CORPORATION | EXE | 15,555 | $1.7M | 0.83% |
| 15 | FTI CONSULTING INC | FCN | 9,555 | $1.6M | 0.79% |
| 16 | EXPAND ENERGY CORPORATION | EXE | 14,000 | $1.5M | 0.75% |
| 17 | DXC TECHNOLOGY CO | DXC | 102,510 | $1.5M | 0.73% |
| 18 | SEABOARD CORP DEL | SE | 286 | $1.3M | 0.62% |
| 19 | BREAD FINANCIAL HOLDINGS INC | BFH-PA | 15,380 | $1.1M | 0.55% |
| 20 | VERTIV HOLDINGS CO | VRT | 7,000 | $1.1M | 0.55% |