Nierenberg Investment Management Company, Inc. Top Holdings and 13F Report (2026)

About Nierenberg Investment Management Company, Inc.

Investment Activity

Nierenberg Investment Management Company, Inc. has $201.49 million in total holdings as of March 31, 2026.
Nierenberg Investment Management Company, Inc. owns shares of 44 different stocks, but just 7 companies or ETFs make up 80% of its holdings.
Approximately 19.81% of the portfolio was purchased this quarter.
About 18.77% of the portfolio was sold this quarter.
This quarter, Nierenberg Investment Management Company, Inc. has purchased 44 new stocks and bought additional shares in 11 stocks.
Nierenberg Investment Management Company, Inc. sold shares of 8 stocks and completely divested from 6 stocks this quarter.

Largest Holdings

iShares 0-3 Month Treasury Bond ETF: $55,423,094
EQT: $33,943,221
Criteo: $18,876,471
Lyft: $17,231,786
KBR: $14,244,289

Largest New Holdings this Quarter

565394103 - MAPLEBEAR INC: $10,934,124 Holding
338307101 - Five9: $2,060,238 Holding
227483104 - Cross Country Healthcare: $1,358,817 Holding
675234108 - OceanFirst Financial: $713,572 Holding
23331S100 - DHI Group: $237,600 Holding

Largest Purchases this Quarter

KBR: 312,733 shares (about $11.53M)
MAPLEBEAR INC: 291,888 shares (about $10.93M)
Lyft: 482,068 shares (about $6.41M)
Criteo: 163,899 shares (about $2.94M)
Five9: 135,810 shares (about $2.06M)

Largest Sales this Quarter

Rocket Companies: 907,000 shares (about $12.92M)
iShares 0-3 Month Treasury Bond ETF: 90,000 shares (about $9.06M)
Brookdale Senior Living: 155,000 shares (about $2.12M)
EXPAND ENERGY CORPORATION: 14,000 shares (about $1.54M)
Oil States International: 100,000 shares (about $1.16M)

Sector Allocation Over Time

Selling

Neutral

Buying

Latest 13F Holdings and Changes Since Previous Quarterly Filing

Issuer Name	Holdings Value	Approximate Purchase/Sale	Change in Shares	Shares Held	% of Portfolio	Sector
SGOV iShares 0-3 Month Treasury Bond ETF	$55,423,094	$9,059,400 â–¼	-14.0%	550,597	27.5%	ETF
EQT EQT	$33,943,221		0.0%	533,363	16.8%	Energy
CRTO Criteo	$18,876,471	$2,938,709 â–²	18.4%	1,052,787	9.4%	Computer and Technology
LYFT Lyft	$17,231,786	$6,411,504 â–²	59.3%	1,295,623	8.6%	Computer and Technology
KBR KBR	$14,244,289	$11,527,338 â–²	424.3%	386,443	7.1%	Construction
RVSB Riverview Bancorp	$11,180,263		0.0%	2,032,775	5.5%	Finance
MAPLEBEAR INC	$10,934,124	$10,934,124 â–²	New Holding	291,888	5.4%	COM
RKT Rocket Companies	$6,122,242	$12,924,751 â–¼	-67.9%	429,631	3.0%	Finance
GDOT Green Dot	$3,804,814		0.0%	339,110	1.9%	Business Services
BKD Brookdale Senior Living	$3,489,905	$2,120,400 â–¼	-37.8%	255,110	1.7%	Medical
DHC Diversified Healthcare Trust	$3,028,570		0.0%	456,110	1.5%	Finance
CNXC Concentrix	$2,311,373		0.0%	84,480	1.1%	Business Services
FIVN Five9	$2,060,238	$2,060,238 â–²	New Holding	135,810	1.0%	Computer and Technology
GLRE Greenlight Capital Re	$1,772,398	$811,852 â–²	84.5%	102,510	0.9%	Finance
FCN FTI Consulting	$1,728,811	$39,773 â–²	2.4%	9,780	0.9%	Business Services
EXPAND ENERGY CORPORATION	$1,707,628	$1,536,920 â–¼	-47.4%	15,555	0.8%	COM
TNDM Tandem Diabetes Care	$1,524,207	$670,087 â–²	78.5%	79,510	0.8%	Medical
CCRN Cross Country Healthcare	$1,358,817	$1,358,817 â–²	New Holding	144,555	0.7%	Business Services
DXC DXC Technology	$1,288,551		0.0%	102,510	0.6%	Computer and Technology
HLX Helix Energy Solutions Group	$1,230,811		0.0%	124,450	0.6%	Energy
ADTN ADTRAN	$1,171,324		0.0%	93,110	0.6%	Business Services
OSK Oshkosh	$846,458		0.0%	5,750	0.4%	Auto/Tires/Trucks
TECHTARGET INC	$787,291	$256,080 â–²	48.2%	202,910	0.4%	COM NEW
FORR Forrester Research	$742,083	$676,682 â–²	1,034.7%	131,110	0.4%	Computer and Technology
OCFC OceanFirst Financial	$713,572	$713,572 â–²	New Holding	39,555	0.4%	Finance
HOPE Hope Bancorp	$709,909	$569,670 â–²	406.2%	63,555	0.4%	Finance
TTEC TeleTech	$638,888	$500,000 â–²	360.0%	255,555	0.3%	Business Services
CLFD Clearfield	$437,020		0.0%	16,510	0.2%	Computer and Technology
FLR Fluor	$305,791		0.0%	6,555	0.2%	Construction
PLAB Photronics	$255,795		0.0%	6,330	0.1%	Computer and Technology
BFH Bread Financial	$253,128	$898,679 â–¼	-78.0%	3,380	0.1%	Finance
DHX DHI Group	$237,600	$237,600 â–²	New Holding	84,555	0.1%	Computer and Technology
PTLO Portillo's	$177,506	$177,506 â–²	New Holding	33,555	0.1%	Retail/Wholesale
OMI Owens & Minor	$176,825	$227,999 â–¼	-56.3%	77,555	0.1%	Medical
OSUR OraSure Technologies	$166,665	$33,000 â–²	24.7%	55,555	0.1%	Medical
OIS Oil States International	$134,500	$1,163,998 â–¼	-89.6%	11,555	0.1%	Energy
WNC Wabash National	$108,224		0.0%	12,555	0.1%	Auto/Tires/Trucks
ARHS Arhaus	$83,462	$20,340 â–¼	-19.6%	12,310	0.0%	Retail/Wholesale
SCYX SCYNEXIS	$69,276		0.0%	75,555	0.0%	Medical
TALK Talkspace	$59,797		0.0%	11,555	0.0%	Medical
CTMX CytomX Therapeutics	$59,009		0.0%	12,555	0.0%	Medical
WTI W&T Offshore	$46,223		0.0%	13,555	0.0%	Energy
OLPX Olaplex	$25,487		0.0%	12,555	0.0%	Consumer Discretionary
NNBR NN	$19,655		0.0%	13,555	0.0%	Industrials
GE VERNOVA INC	$0	$4,967,132 â–¼	-100.0%	0	0.0%	COM
ECVT Ecovyst	$0	$2,226,321 â–¼	-100.0%	0	0.0%	Basic Materials
SEB Seaboard	$0	$1,271,219 â–¼	-100.0%	0	0.0%	Consumer Staples
VRT Vertiv	$0	$1,134,070 â–¼	-100.0%	0	0.0%	Computer and Technology
GIFI Gulf Island Fabrication	$0	$210,133 â–¼	-100.0%	0	0.0%	Energy
EB Eventbrite	$0	$51,420 â–¼	-100.0%	0	0.0%	Computer and Technology

Showing largest 100 holdings. View all holdings.

More Institutional Buying and Selling Information

SEC Filings and Trading Data

Get 30 Days of MarketBeat All Access for Free

Start Your 30-Day Trial

In-depth profiles and analysis for 20,000 public companies.
Real-time analyst ratings, insider transactions, earnings data, and more.
Our daily ratings and market update email newsletter.

Sign In
Create Account

Your Email Address:

Your Password:

Forgot your password?

Your Email Address:

Choose a Password:

By creating a free account, you agree to our terms of service. This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Nierenberg Investment Management Company, Inc. Top Holdings and 13F Report (2026)

About Nierenberg Investment Management Company, Inc.

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information

Best-in-Class Portfolio Monitoring

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools

About MarketBeat

MarketBeat Products

Popular Tools

Financial Calendars

Terms & Info

Nierenberg Investment Management Company, Inc. Top Holdings and 13F Report (2026)

About Nierenberg Investment Management Company, Inc.

Investment Activity

Largest Holdings

Largest New Holdings this Quarter

Largest Purchases this Quarter

Largest Sales this Quarter

Sector Allocation Over Time

Map of 500 Largest Holdings ofNierenberg Investment Management Company, Inc.

Latest 13F Holdings and Changes Since Previous Quarterly Filing

More Institutional Buying and Selling Information

MarketBeat All Access Features

Best-in-Class Portfolio Monitoring

Stock Ideas and Recommendations

Advanced Stock Screeners and Research Tools