Nierenberg Investment Management 13F, Q2 2026

David Nierenberg · quarter ending 30 June 2026 · filed 11 August 2026 · SEC CIK 1282683

$201.45M
Filed US book
35
Positions
23.0%
Largest position

Common stock only: shares the fund reported owning at the quarter end, valued as filed.

Largest positions, Q2 2026

The 25 largest of 35 positions. Weights are against the whole filed book. Changes are in shares held, against the Q1 2026 filing.

CompanyTickerValue% of bookvs Q1 2026
ISHARES TRSGOV$46.41M23.0%-16% shares
EQT CORPEQT$28.36M14.1%unchanged
CRITEO S ACRTO$19.24M9.6%unchanged
LYFT INCLYFT$18.93M9.4%unchanged
MAPLEBEAR INCCART$13.82M6.9%unchanged
KBR INCKBR$13.34M6.6%unchanged
RIVERVIEW BANCORP INCRVSB$11.04M5.5%unchanged
FTI CONSULTING INCFCN$11.01M5.5%+656% shares
ROCKET COS INCRKT$6.77M3.4%unchanged
GREEN DOT CORPGDOT$4.58M2.3%unchanged
DIVERSIFIED HEALTHCARE TRDHC$4.24M2.1%unchanged
BROOKDALE SR LIVING INCBKD$4.10M2.0%unchanged
FIVE9 INCFIVN$2.90M1.4%unchanged
TANDEM DIABETES CARE INCTNDM$2.40M1.2%+100% shares
HAEMONETICS CORP MASSHAE$1.97M1.0%new
GREENLIGHT CAP RE LTD$1.66M0.8%unchanged
RING ENERGY INCREI$1.51M0.8%new
CONCENTRIX CORPCNXC$1.44M0.7%unchanged
EXPAND ENERGY CORPORATIONEXE$1.42M0.7%unchanged
FORRESTER RESH INCFORR$1.10M0.6%unchanged
HELIX ENERGY SOLUTIONS GRP IHLX$1.09M0.5%unchanged
DXC TECHNOLOGY CODXC$907.2K0.5%unchanged
OSHKOSH CORPOSK$882.5K0.4%unchanged
TTEC HLDGS INCTTEC$495.8K0.3%unchanged
TECHTARGET INCTTGT$492.9K0.2%-33% shares

What changed since Q1 2026

Against the Q1 2026 filing, Nierenberg Investment Management opened 3 new positions, added to 2, trimmed 2, left 28 unchanged and exited 12. Every position is compared, matched on its CUSIP; a change of 2% or less in shares counts as unchanged.

New positions

Exited

and 4 more

Added to

Trimmed

  • SGOV-16%$46.41M
  • TTGT-33%$492.9K

Other quarters

Source: SEC Form 13F-HR, accession 0001941040-26-000552, filed by Nierenberg Investment Management Company, LLC. Values are as filed and cover US-listed positions only; a 13F does not show short positions or holdings outside the US. A 13F may be filed up to 45 days after the quarter ends, so the fund may have traded since. Educational information, not financial advice.