13F Insight
DOSSIER · 13F-HR · Q1 2026

Nierenberg Investment Management Company, Inc.

$201M in tracked AUM across 46 positions as of Q1 2026.

NI
CIK 0001282683 · last filed Mar 31, 2026
Total AUM
$201M
as of Q1 2026
Holdings
46
—
positions
Whale Score
67
67
tracked
Activity
—
no data
changes this Q
AI Analysis · Q1 2026

Nierenberg Investment Management Company, Inc. filed its latest 13F-HR for Q1 2026. See the latest holdings and position changes below.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
SGOV
ISHARES TR
$55M551K27.5%02
EQT
EQT CORP
$34M533K16.8%03
CRTO
CRITEO S A
$19M1.1M9.4%04
LYFT
LYFT INC
$17M1.3M8.6%05
KBR
KBR INC
$14M386K7.1%06
RVSB
RIVERVIEW BANCORP INC
$11M2.0M5.5%07
CART
MAPLEBEAR INC
$11M292K5.4%08
RKT
ROCKET COS INC
$6M430K3.0%09
GDOT
GREEN DOT CORP
$4M339K1.9%10
BKD
BROOKDALE SR LIVING INC
$3M255K1.7%

Filing history

2026Q1Mar 31
$201M▼ 2.2%
46 positionsView →2025Q4Dec 31
$206M▼ 12.0%
47 positionsView →2025Q3Sep 30
$234M▲ 24.3%
52 positionsView →2025Q2Jun 30
$188M▲ 2.7%
49 positionsLocked2025Q1Mar 31
$183M▲ 1.7%
57 positionsLocked2024Q4Dec 31
$180M▲ 2.1%
51 positionsLocked2024Q3Sep 30
$176M▼ 1.3%
54 positionsLocked2024Q2Jun 30
$179M▼ 0.5%
53 positionsLocked2024Q1Mar 31
$180M▲ 7.7%
44 positionsLocked2023Q4Dec 31
$167M▲ 19.7%
46 positionsLocked2023Q3Sep 30
$139M▼ 4.7%
33 positionsLocked2023Q2Jun 30
$146M▲ 10.2%
32 positionsLocked
Showing 12 of 66