Nierenberg Investment Management Company, Inc.
13F Reported Value
ⓘ$201.5M
incl. option notional
Equity Holdings
ⓘ$200.8M
Option Notional
ⓘ$661,200
$0 puts / $661,200 calls
Holdings
46
Latest Filing
2026-03-31
Filing Quarter
Q1 2026
Portfolio Overview
Nierenberg Investment Management Company, Inc. disclosed 46 positions worth $201.5M in its Form 13F-HR for Q1 2026 — $200.8M in common stock plus $661,200 of put/call option positions (reported at underlying notional value, not premium at risk), followed by $EQT and $CRTO. During the quarter the fund opened 7 new positions and exited 8 — including a new stake in $CART and a full exit from $GEV. The portfolio is most concentrated in Other (27.6% of disclosed assets). All figures are sourced directly from Nierenberg Investment Management Company, Inc.’s Form 13F-HR filing with the SEC under CIK 1282683.
AI Fund Analysis
DiversifyingSector Allocation
AUM History
Top Equity Holdings by Value
Option Positions
13F rules report options at the value of the underlying shares (notional) — not the premium paid or capital at risk. Shown separately from the equity sleeve above.
Quarterly Activity — Q1 2026
Click any card to unlockTop Holdings
ISHARES TR
—Quality
$55.4M550,597 sh- 83.3#18
Quality
$33.9M533,363 sh - —
Quality
$18.9M1,052,787 sh - 63.1
Quality
$17.2M1,295,623 sh - 64.7
Quality
$14.2M386,443 sh - —
Quality
$11.2M2,032,775 sh - 76.4
Quality
$10.9M291,888 sh - —
Quality
$6.1M429,631 sh - 53.1
Quality
$3.8M339,110 sh - 43.1
Quality
$3.5M255,110 sh
| Company | Quality | Value | Shares |
|---|---|---|---|
| ISHARES TR | — | $55.4M | 550,597 |
 EQT Corp$EQT | 83.3#18 | $33.9M | 533,363 |
 Criteo S.A.$CRTO | — | $18.9M | 1,052,787 |
 Lyft, Inc.$LYFT | 63.1 | $17.2M | 1,295,623 |
 KBR, INC.$KBR | 64.7 | $14.2M | 386,443 |
 RIVERVIEW BANCORP INC$RVSB | — | $11.2M | 2,032,775 |
 Maplebear Inc.$CART | 76.4 | $10.9M | 291,888 |
 Rocket Companies, Inc.$RKT | — | $6.1M | 429,631 |
 GREEN DOT CORP$GDOT | 53.1 | $3.8M | 339,110 |
 Brookdale Senior Living Inc.$BKD | 43.1 | $3.5M | 255,110 |
Unlock AI quality scores for every holding
32-signal composite ranking on each of Nierenberg Investment Management Company, Inc.'s 46 positions.
Showing top 10 of 46 holdings.
Sector Allocation
Other
$55.4M
Industrials
$47.7M
Energy
$37.1M
Financials
$24.6M
Communication Services
$19.7M
Technology
$7.7M
Healthcare
$5.4M
Real Estate
$3.0M
Full Holdings — Nierenberg Investment Management Company, Inc. (Q1 2026)
All 46 disclosed positions from the latest Form 13F-HR, with quarter-over-quarter share changes and 13F Pro quality scores. Sourced from SEC EDGAR.
| # | Ticker | Company | Value | Weight | QoQ | Quality |
|---|---|---|---|---|---|---|
| 1 | — | ISHARES TR | $55.4M | 27.6% | -14% | — |
| 2 | $EQT | EQT Corp | $33.9M | 16.9% | +0% | 83.3 |
| 3 | $CRTO | Criteo S.A. | $18.9M | 9.4% | +18% | — |
| 4 | $LYFT | Lyft, Inc. | $17.2M | 8.6% | +59% | 63.1 |
| 5 | $KBR | KBR, INC. | $14.2M | 7.1% | +424% | 64.7 |
| 6 | $RVSB | RIVERVIEW BANCORP INC | $11.2M | 5.6% | +0% | — |
| 7 | $CART | Maplebear Inc. | $10.9M | 5.4% | NEW | 76.4 |
| 8 | $RKT | Rocket Companies, Inc. | $6.1M | 3.0% | -68% | — |
| 9 | $GDOT | GREEN DOT CORP | $3.8M | 1.9% | +0% | 53.1 |
| 10 | $BKD | Brookdale Senior Living Inc. | $3.5M | 1.7% | -38% | 43.1 |
| 11 |  $DHC | DIVERSIFIED HEALTHCARE TRUST | $3.0M | 1.5% | +0% | 39.7 |
| 12 |  $FIVN | Five9, Inc. | $2.1M | 1.0% | NEW | 58.1 |
| 13 |  $GLRE | GREENLIGHT CAPITAL RE, LTD. | $1.8M | 0.9% | +85% | — |
| 14 |  $CNXC | Concentrix Corp | $1.8M | 0.9% | +0% | 49.1 |
| 15 |  $FCN | FTI CONSULTING, INC | $1.7M | 0.9% | +2% | 55.2 |
| 16 |  $EXE | EXPAND ENERGY Corp | $1.7M | 0.8% | +0% | 83.9 |
| 17 |  $TNDM | TANDEM DIABETES CARE INC | $1.5M | 0.8% | +78% | 34.8 |
| 18 |  $CCRN | CROSS COUNTRY HEALTHCARE INC | $1.4M | 0.7% | NEW | 34.5 |
| 19 |  $DXC | DXC Technology Co | $1.3M | 0.6% | +0% | 52.1 |
| 20 |  $HLX | HELIX ENERGY SOLUTIONS GROUP INC | $1.2M | 0.6% | +0% | 43.5 |
| 21 |  $ADTN | ADTRAN Holdings, Inc. | $1.2M | 0.6% | +0% | 41.6 |
| 22 |  $OSK | OSHKOSH CORP | $846,458 | 0.4% | +0% | 53 |
| 23 |  $TTGT | TechTarget, Inc. | $787,291 | 0.4% | +48% | 19.5 |
| 24 |  $FORR | FORRESTER RESEARCH, INC. | $742,083 | 0.4% | +1035% | 28.9 |
| 25 |  $OCFC | OCEANFIRST FINANCIAL CORP | $713,572 | 0.4% | NEW | — |
| 26 |  $HOPE | HOPE BANCORP INC | $709,909 | 0.3% | +406% | — |
| 27 |  $TTEC | TTEC Holdings, Inc. | $638,888 | 0.3% | +360% | 41.6 |
| 28 | $CNXCCALL | Concentrix Corp | $547,200 | — | +0% | 49.1 |
| 29 |  $CLFD | Clearfield, Inc. | $437,020 | 0.2% | +0% | 43.8 |
| 30 |  $FLR | FLUOR CORP | $305,791 | 0.1% | +0% | 66.2 |
| 31 |  $PLAB | PHOTRONICS INC | $255,795 | 0.1% | +0% | 51.1 |
| 32 |  $BFH | BREAD FINANCIAL HOLDINGS, INC. | $253,128 | 0.1% | -78% | — |
| 33 |  $DHX | DHI GROUP, INC. | $237,600 | 0.1% | NEW | 29.6 |
| 34 |  $PTLO | Portillo's Inc. | $177,506 | 0.1% | NEW | 40.6 |
| 35 |  $OSUR | ORASURE TECHNOLOGIES INC | $166,665 | 0.1% | +25% | 11.5 |
| 36 |  $OIS | OIL STATES INTERNATIONAL, INC | $134,500 | 0.1% | -90% | 42.2 |
| 37 |  $ACHCALL | ACCENDRA HEALTH INC/VA/ | $114,000 | — | NEW | 26.6 |
| 38 |  $WNC | WABASH NATIONAL Corp | $108,224 | 0.1% | +0% | 55.3 |
| 39 |  $ARHS | Arhaus, Inc. | $83,462 | 0.0% | -20% | 47.6 |
| 40 |  $SCYX | SCYNEXIS INC | $69,276 | 0.0% | +0% | — |
| 41 | $ACH | ACCENDRA HEALTH INC/VA/ | $62,825 | 0.0% | +0% | 26.6 |
| 42 |  $TALK | Talkspace, Inc. | $59,797 | 0.0% | +0% | 43.5 |
| 43 |  $CTMX | CytomX Therapeutics, Inc. | $59,009 | 0.0% | +0% | 19.1 |
| 44 |  $WTI | W&T OFFSHORE INC | $46,223 | 0.0% | +0% | 33.8 |
| 45 |  $OLPX | OLAPLEX HOLDINGS, INC. | $25,487 | 0.0% | +0% | 34.7 |
| 46 |  $NNBR | NN INC | $19,655 | 0.0% | +0% | 25.8 |
New Positions (7)
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