Nierenberg Investment Management Company, LLC 13F Portfolio

CIK 1282683 Filing since Q2 2014 Q2 2026 filed Aug 10, 2026
Holdings as of Jun 30, 2026, from the 13F filed Aug 10, 2026.

Portfolio Snapshot

32 positions · Q2 2026

Nierenberg Investment Management Company, LLC reported 32 positions worth $153.88M for the quarter ended Jun 30, 2026, up 7.8% on the prior quarter. It opened 3 new positions, added to 2, trimmed 1 and exited 10. Its largest holding is EQT Corp at 18.4% of the portfolio.

Portfolio Value
$153.88M
+7.8% QoQ · +71.5% YoY
Positions
32
3 new · 10 sold out
Top 10 Concentration
85.3%
of portfolio value
Largest Position
EQT 18.4%
EQT Corp
Net Buying
+$10.06M
$14.26M bought · $4.20M sold
Turnover
2.8%
of the portfolio traded
Top Sector
Technology
36.8% of value
Track Record
29
quarters on file since Q2 2014

Portfolio Value & Positions

Value Positions

Reported 13F market value at each quarter end. A change mixes trading with price moves in the positions held.

Sector Allocation

7 sectors
36.78%
Technology
Technology36.78%
Energy20.42%
Industrials18.65%
Financial Services15.63%
Healthcare5.7%
Real Estate2.76%
Consumer Discretionary0.067%

Quarterly Buying & Selling

Bought Sold

Dollar value of shares bought and sold each quarter, at that quarter’s price. It counts trading only, not price changes.

Position Changes

How many positions were opened, added to, trimmed or closed each quarter.

Sector Allocation Over Time

Share of reported value in each sector at every quarter end.

TechnologyEnergyIndustrialsFinancial ServicesHealthcareReal EstateConsumer DiscretionaryBasic MaterialsConsumer StaplesCommunication Services

Largest Buys

Q2 2026
Holding Change Change % Trade Value Weight
FCN Fti Consulting, Inc +64.1K +655.5% $9.55M 7.15%
HAE Haemonetics Corp +26.3K – $1.97M 1.28%
REI Ring Energy, Inc. +1.40M – $1.51M 0.982%
TNDM Tandem Diabetes Care Inc +79.4K +99.9% $1.20M 1.56%
CNDT CONDUENT Inc +17.6K – $25.63K 0.017%

Largest Sells

Q2 2026
Holding Change Change % Trade Value Weight
ADTN ADTRAN Holdings, Inc. -93.1K -100.0% $1.17M Exited
OCFC Oceanfirst Financial Corp -39.6K -100.0% $713.57K Exited
HOPE Hope Bancorp Inc -63.6K -100.0% $709.91K Exited
CLFD Clearfield, Inc. -16.5K -100.0% $437.02K Exited
PLAB Photronics Inc -6,330 -100.0% $255.80K Exited
BFH Bread Financial Holdings, Inc. -3,380 -100.0% $253.13K Exited
TTGT TechTarget, Inc. -66.0K -32.5% $237.60K 0.32%
PTLO Portillo's Inc. -33.6K -100.0% $177.51K Exited
WNC WABASH NATIONAL Corp -12.6K -100.0% $108.22K Exited
SCYX Scynexis Inc -9,444 -100.0% $69.28K Exited

New Positions

Q2 2026
Holding Shares Trade Value Weight
HAE Haemonetics Corp +26.3K $1.97M 1.28%
REI Ring Energy, Inc. +1.40M $1.51M 0.982%
CNDT CONDUENT Inc +17.6K $25.63K 0.017%

Closed Positions

Q2 2026
Holding Shares Sold Trade Value Prior Weight
ADTN ADTRAN Holdings, Inc. -93.1K $1.17M 0.821%
OCFC Oceanfirst Financial Corp -39.6K $713.57K 0.5%
HOPE Hope Bancorp Inc -63.6K $709.91K 0.497%
CLFD Clearfield, Inc. -16.5K $437.02K 0.306%
PLAB Photronics Inc -6,330 $255.80K 0.179%
BFH Bread Financial Holdings, Inc. -3,380 $253.13K 0.177%
PTLO Portillo's Inc. -33.6K $177.51K 0.124%
WNC WABASH NATIONAL Corp -12.6K $108.22K 0.076%
SCYX Scynexis Inc -9,444 $69.28K 0.049%
ACH Accendra Health Inc -27.6K $62.82K 0.044%
Holdings · Q2 2026

32 Positions

As ofJun 30, 2026
Value$153.88M
Top 1085.3%
Avg position$4.81M
# Activity
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Showing 1–15 of 32 positions 13F filings on SEC EDGAR

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About Nierenberg Investment Management Company, LLC’s 13F Portfolio

What are Nierenberg Investment Management Company, LLC’s largest holdings?

As of its Q2 2026 13F filing, Nierenberg Investment Management Company, LLC’s five largest positions were EQT Corp (EQT) at 18.4%, Criteo S.A. (CRTO) at 12.5%, Lyft, Inc. (LYFT) at 12.3%, Maplebear Inc. (CART) at 9.0%, Kbr, Inc. (KBR) at 8.7% of the reported portfolio.

How much is Nierenberg Investment Management Company, LLC’s portfolio worth?

Nierenberg Investment Management Company, LLC reported a 13F portfolio worth $153.88M across 32 positions for Q2 2026. That is up 7.8% from the previous quarter.

What did Nierenberg Investment Management Company, LLC buy in Q2 2026?

Its largest purchases by value were Fti Consulting, Inc ($9.55M), Haemonetics Corp ($1.97M), Ring Energy, Inc. ($1.51M). It opened 3 new positions.

What did Nierenberg Investment Management Company, LLC sell in Q2 2026?

Its largest sales by value were ADTRAN Holdings, Inc. ($1.17M), Oceanfirst Financial Corp ($713.57K), Hope Bancorp Inc ($709.91K). It exited 10 positions entirely.

Where does this data come from?

From the Form 13F-HR reports Nierenberg Investment Management Company, LLC files with the SEC each quarter, within 45 days of quarter end. A 13F lists long positions in US-listed equities and options; it excludes short positions, cash, bonds and most non-US holdings.

Similar-Sized Institutions

by reported 13F value

13F data reflects long positions in US-listed equities and options as reported to the SEC up to 45 days after quarter end. It excludes short positions, cash, bonds and most non-US securities, so it is not a complete picture of a manager’s assets.