Nierenberg Investment Management Company, LLC
CIK 1282683 · View on SEC EDGAR ↗
- Portfolio value
- $201.4M
- Positions
- 35
- As of
- June 30, 2026
#6,444 of 9,443 by 13F value · top 68.2%
Portfolio value QoQ: +-0.0% 13F does not disclose cash
- Top 10 holdings weight
- 86.13%
- Top 25 holdings weight
- 99.34%
- Positions above 1%
- 14
- Effective number of positions
- 9.2
Based on 13F long-equity holdings only (cash, bonds, shorts not disclosed)
Turnover Q2 2026: 7.08% Est. buys $14,258,879 · sells $14,709,481
Median holding: 3.0 quarters Tracked Q4 2024–Q2 2026 · 37.6% still held
- New positions
- 3
- Increased
- 2
- Decreased
- 2
- Closed
- 12
On this page
- Performance vs S&P How this manager's 13F portfolio performed against the S&P 500.
- Sector breakdown How the portfolio splits across market sectors.
- Portfolio Every stock this institution reports holding, from its latest 13F.
- Biggest new bets Brand-new positions opened in the latest quarter.
- Top moves The biggest position increases and decreases this quarter.
- Exited positions Positions the manager fully sold out of last quarter.
- Related The person behind this filer, where we can match one.
Performance vs S&P 500
Approximates a buy-and-hold portfolio built from quarterly SEC 13F snapshots. Excludes cash, short positions, options/derivatives, and non-13(f) securities — reflects the disclosed long-equity book only, not total fund AUM. SEC filing lag is up to 45 days; this is not a real-time-copyable timing.
Priceable coverage: 99.6% · Options excluded: 2.1%
Sector breakdown
Industrials
23.6%
Energy
15.4%
Communication Services
10.0%
Retail
6.9%
Financials
6.3%
Financial Services
5.6%
Health Care
4.4%
Real Estate
2.1%
Technology
1.9%
Other/Unmapped
23.8%
Full portfolio 35 positions
| Type | Streak | 8Q trend | |||||
|---|---|---|---|---|---|---|---|
| SGOV iShares 0-3 Month Treasury Bond ETF | $46,413,601 | 23.04% | 461,047 | $-9,009,493 | Down ×2 | ||
| EQT EQT Corporation Common Stock | $28,358,911 | 14.08% | 533,363 | $-5,584,310 | |||
| CRTO Criteo S.A. - American Depositary Shares | $19,244,946 | 9.55% | 1,052,787 | $368,475 | |||
| LYFT Lyft, Inc. - Class A Common Stock | $18,929,052 | 9.40% | 1,295,623 | $1,697,266 | |||
| CART Maplebear Inc. - Common Stock | $13,820,897 | 6.86% | 291,888 | $2,886,773 | |||
| KBR KBR, Inc. Common Stock | $13,343,877 | 6.62% | 386,443 | $-900,412 | |||
| RVSB Riverview Bancorp Inc - Common Stock | $11,037,968 | 5.48% | 2,032,775 | $-142,295 | |||
| FCN FTI Consulting, Inc. Common Stock | $11,009,902 | 5.47% | 73,887 | $9,281,091 | Up ×2 | ||
| RKT Rocket Companies, Inc. Class A Common Stock | $6,766,688 | 3.36% | 429,631 | $644,446 | |||
| GDOT Green Dot Corporation Class A Common Stock, $0.001 par value | $4,581,376 | 2.27% | 339,110 | $776,562 | |||
| DHC Diversified Healthcare Trust - Common Shares of Beneficial Interest | $4,241,823 | 2.11% | 456,110 | $1,213,253 | |||
| BKD Brookdale Senior Living Inc. Common Stock | $4,104,720 | 2.04% | 255,110 | $614,815 | |||
| FIVN Five9, Inc. - Common Stock | $2,895,469 | 1.44% | 135,810 | $835,231 | |||
| TNDM Tandem Diabetes Care, Inc. - Common Stock | $2,397,952 | 1.19% | 158,910 | $873,745 | Up ×2 | ||
| HAE Haemonetics Corporation Common Stock | $1,971,000 | 0.98% | 26,280 | Up ×1 | |||
| GLRE Greenlight Reinsurance, Ltd. - Class A Ordinary Shares | $1,658,612 | 0.82% | 102,510 | $-113,786 | |||
| REI | $1,511,519 | 0.75% | 1,399,555 | Up ×1 | |||
| CNXC Concentrix Corporation - Common Stock | $1,444,674 | 0.72% | 64,480 | $-319,499 | |||
| EXE Expand Energy Corporation - Common Stock | $1,418,460 | 0.70% | 15,555 | $-289,168 | |||
| FORR Forrester Research, Inc. - Common Stock | $1,102,635 | 0.55% | 131,110 | $360,552 | |||
| HLX Helix Energy Solutions Group, Inc. Common Stock | $1,087,693 | 0.54% | 124,450 | $-143,118 | |||
| DXC DXC Technology Company Common Stock | $907,214 | 0.45% | 102,510 | $-381,337 | |||
| OSK Oshkosh Corporation (Holding Company)Common Stock | $882,510 | 0.44% | 5,750 | $36,052 | |||
| TTEC TTEC Holdings, Inc. - Common Stock | $495,777 | 0.25% | 255,555 | $-143,111 | |||
| TTGT TechTarget, Inc. - Common Stock | $492,876 | 0.24% | 136,910 | $-294,415 | Down ×1 | ||
| FLR Fluor Corporation Common Stock | $343,416 | 0.17% | 6,555 | $37,625 | |||
| DHX DHI Group, Inc. Common Stock | $313,699 | 0.16% | 84,555 | $76,099 | |||
| OSUR OraSure Technologies, Inc. - Common Stock | $247,775 | 0.12% | 55,555 | $81,110 | |||
| ARHS Arhaus, Inc. - Class A Common Stock | $103,650 | 0.05% | 12,310 | $20,188 | |||
| OIS Oil States International, Inc. Common Stock | $92,556 | 0.05% | 11,555 | $-41,944 | |||
| TALK Talkspace, Inc. - Common Stock | $60,086 | 0.03% | 11,555 | $289 | |||
| NNBR NN, Inc. - Common Stock | $48,662 | 0.02% | 13,555 | $29,007 | |||
| CTMX CytomX Therapeutics, Inc. - Common Stock | $47,081 | 0.02% | 12,555 | $-11,928 | |||
| WTI W&T Offshore, Inc. Common Stock | $42,698 | 0.02% | 13,555 | $-3,525 | |||
| CNDT Conduent Incorporated - Common Stock | $25,630 | 0.01% | 17,555 | Up ×1 | |||
| No matches | |||||||
Biggest new bets
New positions opened this quarter, largest first.
Top movers (QoQ)
| Security | Action | Shares Δ | Value Δ |
|---|---|---|---|
| SGOV | Trimmed | -90K | -$9.0M |
| EQT | Price move only | +0 | -$5.6M |
| CART | Price move only | +0 | +$2.9M |
| LYFT | Price move only | +0 | +$1.7M |
| DHC | Price move only | +0 | +$1.2M |
| KBR | Price move only | +0 | -$900K |
| TNDM | Bought more | +79K | +$874K |
| FIVN | Price move only | +0 | +$835K |
| GDOT | Price move only | +0 | +$777K |
| RKT | Price move only | +0 | +$644K |
1 position hidden (data completeness check)
Exited positions
Includes corporate events (mergers, delistings) — not all exits are sells
Closed positions reflect 13F reporting changes; for index managers these are often mechanical (delisting, M&A, index rebalancing), not active decisions.
| Security | Quarter | Shares before | Value before | Price since exit |
|---|---|---|---|---|
| PBPB | Dec. 31, 2025 | 2,980,564 | $50,788,811 | No longer tracked |
| COOP | Dec. 31, 2025 | 126,121 | $26,585,046 | No longer tracked |
| CTLP | June 30, 2025 | 2,467,534 | $19,419,493 | No longer tracked |
| SPY | Dec. 31, 2025 | 25,000 | $16,654,500 | No longer tracked |
| EBC | March 31, 2025 | 613,088 | $10,575,768 | 39.5% |
| QQQ | Dec. 31, 2025 | 17,100 | $10,266,327 | |
| GEV | March 31, 2026 | 7,600 | $4,967,132 | 11.2% |
| NVDA | Dec. 31, 2025 | 22,800 | $4,254,024 | 16.3% |
| AVGO | Dec. 31, 2025 | 10,200 | $3,365,082 | 7.7% |
| ANET | Dec. 31, 2025 | 18,600 | $2,710,206 | 43.8% |
| CEG | Dec. 31, 2025 | 7,100 | $2,336,397 | -22.8% |
| ECVT | March 31, 2026 | 228,810 | $2,226,321 | -19.4% |
| MTCH | Dec. 31, 2025 | 56,680 | $2,001,938 | 23.9% |
| BFH | March 31, 2025 | 27,680 | $1,690,141 | 108.7% |
| TPC | Dec. 31, 2025 | 24,680 | $1,618,761 | 36.1% |
| CCRN | June 30, 2026 | 144,555 | $1,358,817 | No longer tracked |
| SEB | March 31, 2026 | 286 | $1,271,219 | No longer tracked |
| ADTN | June 30, 2026 | 93,110 | $1,171,324 | -43.3% |
| VRT | March 31, 2026 | 7,000 | $1,134,070 | 5.5% |
| RRC | Dec. 31, 2025 | 29,555 | $1,112,450 | 15.4% |
| HOPE | Sept. 30, 2025 | 99,555 | $1,068,225 | 30.5% |
| FFIC | June 30, 2025 | 77,555 | $984,949 | No longer tracked |
| PLPC | Dec. 31, 2025 | 4,555 | $893,463 | 105.1% |
| APP | March 31, 2025 | 2,555 | $827,386 | 13.5% |
| OCFC | June 30, 2026 | 39,555 | $713,572 | -1.9% |
| SSUP | June 30, 2025 | 333,555 | $710,472 | No longer tracked |
| HOPE | June 30, 2026 | 63,555 | $709,909 | 2.7% |
| PLAB | Sept. 30, 2025 | 34,330 | $646,434 | 33.8% |
| CYH | March 31, 2025 | 205,655 | $614,908 | 9.8% |
| BRY | Dec. 31, 2025 | 160,000 | $604,800 | No longer tracked |
| ETN | Dec. 31, 2025 | 1,600 | $598,800 | 32.1% |
| MTRX | June 30, 2025 | 44,555 | $553,819 | -16.9% |
| CLFD | June 30, 2026 | 16,510 | $437,020 | -30.2% |
| VISN | March 31, 2025 | 52,555 | $273,812 | 109.7% |
| PLAB | June 30, 2026 | 6,330 | $255,795 | -5.6% |
| BFH | June 30, 2026 | 3,380 | $253,128 | -3.5% |
| GIFI | March 31, 2026 | 17,555 | $210,133 | No longer tracked |
| PFIE | March 31, 2025 | 72,555 | $184,290 | No longer tracked |
| PTLO | June 30, 2026 | 33,555 | $177,506 | 2.5% |
| ACH | June 30, 2026 | 77,555 | $176,825 | -62.7% |
| DHX | Sept. 30, 2025 | 44,555 | $132,328 | 50.9% |
| WNC | June 30, 2026 | 12,555 | $108,224 | -11.0% |
| ARRY | June 30, 2025 | 19,555 | $95,233 | -19.6% |
| UFI | June 30, 2025 | 17,555 | $84,440 | 45.8% |
| FFWM | June 30, 2025 | 15,555 | $80,730 | No longer tracked |
| NAGE | June 30, 2025 | 11,555 | $79,730 | -78.0% |
| SCYX | June 30, 2026 | 75,555 | $69,276 | 28.5% |
| BGFV | June 30, 2025 | 67,555 | $65,319 | No longer tracked |
| EB | March 31, 2026 | 11,555 | $51,420 | No longer tracked |
| ENZB | June 30, 2025 | 88,555 | $32,765 | No longer tracked |
| OLPX | June 30, 2026 | 12,555 | $25,487 | No longer tracked |