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TTEN·K/calls

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Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.

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Home›13F Funds›JANA Partners
13F portfolio · as of 2026-03-31 (Q1 2026) · filed 2026-05-15

JANA Partners· Barry Rosenstein

Barry Rosenstein's activist fund - concentrated stakes pushed toward breakups, sales and capital returns.

Reported book
$1.67B
Positions
11
Vs prior quarter
1 new · 2 exited
Top-10 weight
98%
Effective positions
8
Largest position
18%
Names we rate BUY
2

Sector allocationby reported value · GICS

  • Unclassified27%
  • Financials23%
  • Industrials18%
  • Health Care15%
  • Consumer Staples13%
  • Information Technology4%
Biggest new buy
P
3.7% of book
Biggest add
COO
+1% shares
Biggest exit
TREEHOUSE FOODS INC
was $137M

Names we rate BUY in this bookour independent SEC-grounded verdict

  • FISVBuy15%
  • PBuy4%

Holdings

JANA Partners latest 13F holdings with our verdicts
#HoldingOur call% of bookValueSharesQoQ
1MRCYMERCURY SYSTEMS INCHold18.0%$299M4.11MTrimmed-17%
2COOCOOPER COMPANIES, INC.Hold15.3%$255M3.57MAdded+1%
3FISVFISERV INCBuy14.8%$248M4.44MAdded+98%
4SPYSTATE STR SPDR S&P 500 ETF T—13.4%$223M344KTrimmed-12%
5LWLamb Weston Holdings, Inc.Hold12.7%$212M5.01M—
6MKLMARKEL GROUP INC.Hold8.6%$144M75.3KTrimmed-7%
7ALKTALKAMI TECHNOLOGY INC—5.1%$85.1M5.43MAdded+11%
8FUNSIX FLAGS ENTERTAINMENT CORP—4.4%$73.1M4.12M—
9PEverpure, Inc.Buy3.7%$61.5M1.04MNEW
10RPDRAPID7 INC—2.2%$37.2M6.74M—
11ENHABIT INC—1.8%$29.5M2.09M—

Exited since Q4 2025

  • TREEHOUSE FOODS INCwas $137M
  • FRPTwas $34.0M

Source: SEC Form 13F-HR. Positions are as-of quarter end (filed up to 45 days later) and cover US-listed equities only — shorts, non-US listings and most derivatives don’t appear. Values as reported by the filer. “Our call” is TENK/calls’s independent SEC-grounded verdict, not the fund’s view.

Research and education only — not financial advice. TENKis not a registered investment adviser or broker-dealer and gives no personalized advice. Every call is impersonal — identical for all users, generated on a schedule from SEC filings plus a delayed/third-party price feed — may be wrong or out of date, and is not a recommendation to buy or sell any security. The operator and an affiliated trading operation may hold or trade the securities TENK rates; see Disclosures. Past performance does not guarantee future results. Do your own research.

Intraday
NVDA$209.23▼1.22%AAPL$327.82▲4.12%GOOGL$370.03▲2.93%GOOG$368.77▲3.20%MSFT$396.34▲2.96%AMZN$254.96▲3.02%TSM$417.95▼0.58%AVGO$391.94▲0.73%SPCX$134.77▼0.97%META$673.73▲1.92%TSLA$398.30▲0.54%MU$906.76▼7.77%BRK-A$734,704.78▼0.31%BRK-B$490.10▼0.20%LLY$1,146.65▼0.51%JPM$347.08▲1.22%WMT$113.86▲0.14%AMD$527.56▼3.75%ASML$1,790.43▲0.83%V$358.63▲0.73%JNJ$249.64▼1.66%XOM$143.08▼1.39%INTC$101.96▼5.38%MA$537.58▼0.08%AMAT$574.51▼3.56%CSCO$111.65▼4.65%LRCX$329.07▼4.92%ABBV$246.99▲0.90%CAT$903.41▼3.21%BAC$61.49▲1.44%
NVDA$209.23▼1.22%AAPL$327.82▲4.12%GOOGL$370.03▲2.93%GOOG$368.77▲3.20%MSFT$396.34▲2.96%AMZN$254.96▲3.02%TSM$417.95▼0.58%AVGO$391.94▲0.73%SPCX$134.77▼0.97%META$673.73▲1.92%TSLA$398.30▲0.54%MU$906.76▼7.77%BRK-A$734,704.78▼0.31%BRK-B$490.10▼0.20%LLY$1,146.65▼0.51%JPM$347.08▲1.22%WMT$113.86▲0.14%AMD$527.56▼3.75%ASML$1,790.43▲0.83%V$358.63▲0.73%JNJ$249.64▼1.66%XOM$143.08▼1.39%INTC$101.96▼5.38%MA$537.58▼0.08%AMAT$574.51▼3.56%CSCO$111.65▼4.65%LRCX$329.07▼4.92%ABBV$246.99▲0.90%CAT$903.41▼3.21%BAC$61.49▲1.44%
Intraday
NVDA$209.23▼1.22%AAPL$327.82▲4.12%GOOGL$370.03▲2.93%GOOG$368.77▲3.20%MSFT$396.34▲2.96%AMZN$254.96▲3.02%TSM$417.95▼0.58%AVGO$391.94▲0.73%SPCX$134.77▼0.97%META$673.73▲1.92%TSLA$398.30▲0.54%MU$906.76▼7.77%BRK-A$734,704.78▼0.31%BRK-B$490.10▼0.20%LLY$1,146.65▼0.51%JPM$347.08▲1.22%WMT$113.86▲0.14%AMD$527.56▼3.75%ASML$1,790.43▲0.83%V$358.63▲0.73%JNJ$249.64▼1.66%XOM$143.08▼1.39%INTC$101.96▼5.38%MA$537.58▼0.08%AMAT$574.51▼3.56%CSCO$111.65▼4.65%LRCX$329.07▼4.92%ABBV$246.99▲0.90%CAT$903.41▼3.21%BAC$61.49▲1.44%
NVDA$209.23▼1.22%AAPL$327.82▲4.12%GOOGL$370.03▲2.93%GOOG$368.77▲3.20%MSFT$396.34▲2.96%AMZN$254.96▲3.02%TSM$417.95▼0.58%AVGO$391.94▲0.73%SPCX$134.77▼0.97%META$673.73▲1.92%TSLA$398.30▲0.54%MU$906.76▼7.77%BRK-A$734,704.78▼0.31%BRK-B$490.10▼0.20%LLY$1,146.65▼0.51%JPM$347.08▲1.22%WMT$113.86▲0.14%AMD$527.56▼3.75%ASML$1,790.43▲0.83%V$358.63▲0.73%JNJ$249.64▼1.66%XOM$143.08▼1.39%INTC$101.96▼5.38%MA$537.58▼0.08%AMAT$574.51▼3.56%CSCO$111.65▼4.65%LRCX$329.07▼4.92%ABBV$246.99▲0.90%CAT$903.41▼3.21%BAC$61.49▲1.44%