Nierenberg Investment Management Company, Inc.
Sector Allocation
- Industrials24.6%$49.6M
- Other23.0%$46.4M
- Energy16.1%$32.5M
- Financials11.9%$24.0M
- Communication Services9.8%$19.7M
- Technology7.9%$15.9M
- Healthcare4.4%$8.8M
- Real Estate2.1%$4.2M
- Consumer Discretionary0.1%$103,650
AUM History
13fpro.ai/research/fund/nierenberg-investment-management-company-inc-1282683
Conviction and streaks
Diversifying · top 10 = 86.1%From the fund's last 12 quarters of 13F filings: positions held longest at size, and names it added to or trimmed several quarters running.
Largest positions — Q2 2026
- ISHARES$46.4M
EQT
$28.4MCRTO
$19.2MLYFT
$18.9MCART
$13.8MKBR
$13.3MRVSB
$11.0MFCN
$11.0MRKT
$6.8MGDOT
$4.6MDHC
$4.2MBKD
$4.1MFIVN
$2.9MTNDM
$2.4MHAE
$2.0MGLRE
$1.7MREI
$1.5MCNXC
$1.4MEXE
$1.4MFORR
$1.1M
Top 20 stock positions. Options are left out: 13F reports them at the underlying's value.
13fpro.ai/research/fund/nierenberg-investment-management-company-inc-1282683
Nierenberg Investment Management Company, Inc. 13F holdings — Q2 2026
$201.4M portfolio (-0.0% QoQ) · 35 holdings · Q2 2026 13F · top 10 are 86% of the stock portfolio
- 1
ISHARES TR - 0-3 MTH TREASURY
$46.4M
23.0% of stocks
-16%This quarter—Since filed—HeldAIQuality—Est. buy— $28.4M
14.1% of stocks
No changeThis quarter+0.9%Since filed10+ qtrsHeld$19.2M
9.6% of stocks
No changeThis quarter-16.2%Since filed7 qtrsHeld$18.9M
9.4% of stocks
No changeThis quarter-2.7%Since filed5 qtrsHeld$13.8M
6.9% of stocks
No changeThis quarter+23.3%Since filed2 qtrsHeld$13.3M
6.6% of stocks
No changeThis quarter+6.5%Since filed10+ qtrsHeld$11.0M
5.5% of stocks
No changeThis quarter+14.5%Since filed9 qtrsHeld$11.0M
5.5% of stocks
+655%This quarter+5.6%Since filed3 qtrsHeldAIQualityAI quality score is Pro: unlock with a free trialEst. buyEstimated buy price is Pro: unlock with a free trialAdded 3 qtrs in a row$6.8M
3.4% of stocks
No changeThis quarter-19.8%Since filed3 qtrsHeld$4.6M
2.3% of stocks
No changeThis quarter-9.6%Since filed6 qtrsHeld
All holdings — Nierenberg Investment Management Company, Inc. (Q2 2026)
35 disclosed positions from the Form 13F-HR on SEC EDGAR, with quarter-over-quarter share changes. Largest by value first; the ten above are not repeated.
| # | Company | Held | Source | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 11 | DIVERSIFIED HEALTHCARE TRUST | Real Estate | $4.2M | 2.1% | 456K | — | 10+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 12 | Brookdale Senior Living Inc. | Healthcare | $4.1M | 2.0% | 255K | — | 10+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 13 | Five9, Inc. | Technology | $2.9M | 1.4% | 136K | — | 2 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 14 | TANDEM DIABETES CARE INC | Healthcare | $2.4M | 1.2% | 159K | +100% | 3 qtrsAdded 3 qtrs in a row | AI quality score is Pro: unlock with a free trial | 13F | |
| 15 | HAEMONETICS CORP | Healthcare | $2.0M | 1.0% | 26K | New | 1 qtr | AI quality score is Pro: unlock with a free trial | 13F | |
| 16 | GREENLIGHT CAPITAL RE, LTD. | Financials | $1.7M | 0.8% | 103K | — | 3 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 17 | RING ENERGY, INC. | Energy | $1.5M | 0.8% | 1.40M | New | 1 qtr | AI quality score is Pro: unlock with a free trial | 13F | |
| 18 | Concentrix Corp | Industrials | $1.4M | 0.7% | 64K | — | 10+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 19 | EXPAND ENERGY Corp | Energy | $1.4M | 0.7% | 16K | — | 8 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 20 | FORRESTER RESEARCH, INC. | Technology | $1.1M | 0.6% | 131K | — | 4 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 21 | HORNBECK OFFSHORE SERVICES, INC. | Energy | $1.1M | 0.5% | 124K | — | 10+ qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 22 | DXC Technology Co | Technology | $907K | 0.5% | 103K | — | 9 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 23 | OSHKOSH CORP | Industrials | $883K | 0.4% | 5,750 | — | 8 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 24 | TTEC Holdings, Inc. | Industrials | $496K | 0.3% | 256K | — | 3 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 25 | TechTarget, Inc. | Communication Services | $493K | 0.2% | 137K | -33% | 4 qtrs | AI quality score is Pro: unlock with a free trial | 13F | |
| 26 | $FLR | FLUOR CORP | Industrials | $343K | 0.2% | 6,555 | — | |||
| 27 | $DHX | DHI GROUP, INC. | Industrials | $314K | 0.2% | 85K | — | |||
| 28 | $OSUR | ORASURE TECHNOLOGIES INC | Healthcare | $248K | 0.1% | 56K | — | |||
| 29 | $ARHS | Arhaus, Inc. | Consumer Discretionary | $104K | 0.1% | 12K | — | |||
| 30 | $OIS | OIL STATES INTERNATIONAL, INC | Energy | $93K | 0.1% | 12K | — | |||
| 31 | $TALK | Talkspace, Inc. | Healthcare | $60K | 0.0% | 12K | — | |||
| 32 | $NNBR | NN INC | Industrials | $49K | 0.0% | 14K | — | |||
| 33 | $CTMX | CytomX Therapeutics, Inc. | Healthcare | $47K | 0.0% | 13K | — | |||
| 34 | $WTI | W&T OFFSHORE INC | Energy | $43K | 0.0% | 14K | — | |||
| 35 | $CNDT | CONDUENT Inc | Industrials | $26K | 0.0% | 18K | New |
What changed in Q2 2026
Against the previous quarter's 13F: 3 new, 2 added to, 2 trimmed, 14 sold out. Share-count changes; largest moves by dollar size first.
New positions (3)
Added to (2)
Trimmed (2)
- ISHARES TR - 0-3 MTH TREASURY-16%
now $46.4M
$TTGTTechTarget, Inc.-33%
now $493K · held 4 qtrs
Sold out (14)
$CCRNCROSS COUNTRY HEALTHCARE INCwas $1.4M
held 1 qtr
$ADTNADTRAN Holdings, Inc.was $1.2M
held 7 qtrs
$OCFCOCEANFIRST FINANCIAL CORPwas $714K
held 1 qtr
$HOPEHOPE BANCORP INCwas $710K
held 2 qtrs
$CLFDClearfield, Inc.was $437K
held 9+ qtrs
+8 more in the Excel export
Holdings by quarter
Every 13F Nierenberg Investment Management Company, Inc. has filed, 32 earlier quarters. Pick one to see what it held then.
Is it too late to follow Nierenberg Investment Management Company?
Q2 2026 13F filed with the SEC on Aug 11, 2026. Prices are closing prices as of Oct 26, 2026.
Average quality of Nierenberg Investment Management Company's top 20 holdings: 62/100 (our AI quality score, weighted by position size; 18 of the 20 are scored)
Top 10 since filing
+0.7%
Value-weighted move of the 10 largest stock positions
Turnover
7%
Last quarter; 79% over the last 4
Top 10 weight
86%
Share of the stock portfolio in its 10 largest positions
Held 4+ quarters
72%
Share of portfolio value in positions held a year or more
Highest-quality names it owns(among its 100 largest positions)
The 8 highest-scoring companies in this portfolio are a Pro feature.
How these are measured
- Moves since the quarter-end and since the filing date use our own daily closing prices, from the close on (or just before) each date to the latest close.
- Turnover is the lesser of shares bought or sold in a quarter, valued at the quarter-end prices in the 13F, divided by the average of the two quarters' stock portfolio values.
- Quarters held and add/trim streaks count back only through quarters whose filed holdings add up to the filing's own cover-page total (back to Q1 2024 for this fund). A change counts as an add or a trim when the split-adjusted share count moves by more than 1%.
- Estimate, not the fund's reported cost. For each quarter in the current holding period in which the fund's share count rose (split-adjusted), we take that quarter's average daily close and weight it by the shares added; sales do not change an average cost. Quarters where the stock's price history and the 13F's own implied price disagree by more than 2x are left out.
- Put and call option rows report the value of the underlying shares, not a position the fund paid for, so they are left out of all of the above.
Portfolio Overview
Nierenberg Investment Management Company, Inc. disclosed 35 positions worth $201.4M in its Form 13F-HR for Q2 2026, followed by $EQT and $CRTO. During the quarter the fund opened 3 new positions and exited 14 — including a new stake in $HAE and a full exit from $CCRN. The portfolio is most concentrated in Industrials (24.6% 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.
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AI-Powered Hedge Fund Analysis: Nierenberg Investment Management Company, Inc.
13F Pro is an AI hedge fund tracker and stock research platform. For Nierenberg Investment Management Company, Inc. (SEC CIK: 1282683), the platform ingests every quarterly Form 13F filing and applies AI-powered analysis on top — 10 specialized AI analysts (value, growth, momentum, macro, activist, and more) debate the fund's top positions and publish AI-generated analysis with cited SEC sources.
Every holding in Nierenberg Investment Management Company, Inc.'s portfolio is scored on an AI quality ranking built from its SEC filings (ROIC, FCF margin, revenue growth, institutional flow, earnings quality, shareholder dilution, and more). Track accumulation and distribution quarter over quarter, identify conviction positions, and see AI stock analysis for each position — alongside 8,700+ other institutional filers and 2,800+ AI-ranked companies.