§ 13F · FUND PROFILE
Nierenberg Investment Management Company, LLC.
Institutional filer · behavioral pattern: Other. Summary pending.
AUM · $234.0T (13F)Positions · 52Turnover · — · Q3Filed · May 13, 2026
CONCENTRATION
—
Top 10 holdings
NEW BUYS
0
No new positions
EXITS
0
No exits
SECTOR SHIFT
—
No prior quarter data
3YR HIT RATE
—
Top-5 overlap
§ 01 · TOP HOLDINGS
The book · Q3 2025
FILED MAY 13, 2026
| # | Ticker | Name | Shares | $ value | % port | Δ Q3 |
|---|---|---|---|---|---|---|
| 1 | PTB | POTBELLY CORP | 2.98M | $50.8T | 21.7% | — |
| 2 | EQT | EQT CORP | 537K | $29.2T | 12.5% | — |
| 3 | 07WA | MR COOPER GROUP INC | 126K | $26.6T | 11.4% | — |
| 4 | LYFT | LYFT INC | 814K | $17.9T | 7.7% | — |
| 5 | SPY | SPDR S&P 500 ETF TR | 25K | $16.7T | 7.1% | — |
| 6 | RVSB | RIVERVIEW BANCORP INC | 2.03M | $10.9T | 4.7% | — |
| 7 | QQQ | INVESCO QQQ TR | 17K | $10.3T | 4.4% | — |
| 8 | CRTO | CRITEO S A | 425K | $9.6T | 4.1% | — |
| 9 | GEV | GE VERNOVA INC | 11K | $6.9T | 2.9% | — |
| 10 | GDOT | GREEN DOT CORP | 339K | $4.6T | 1.9% | — |
§ 02 · SECTOR ALLOCATION
Where the money is
Sector data pending
§ 03 · THE NIERENBERG SIGNAL
AC read
Nierenberg Investment Management Company, LLC is a Other fund managing $233997.0 trillion in assets. The fund runs a portfolio of 52 positions.
Read the full dossier →§ 04 · FILING HISTORY
Q-by-Q deltas
2 FILINGS
Q1 2026
Steady book
+0 buys · −0 exits · 0 changed
Q4 2025
Steady book
+0 buys · −0 exits · 0 changed
Q3 2025
Steady book
+0 buys · −0 exits · 0 changed
Q2 2025
Steady book
+0 buys · −0 exits · 0 changed