13F Filings/JANA Partners Management, LP

JANA Partners Management, LP

Hedge FundCIK0001998597LocationNEW YORK, NY 10106, United States

Long U.S. equity positions disclosed to the SEC on Form 13F-HR.

Latest filingQ1 2026Quarter ended31 Mar 2026Filed15 May 2026
Firm profile · Form ADV
SEC adviser registration
CRD
151318 · 801-70627
Portfolio Turnover
13%
Of book traded, QoQ
Positions
10
Long U.S. equities
Top 10 Concentration
100%
Of reported value
QoQ Change
$-315.8M
Value change
Assets under management
Form ADV RAUM · client mix · 13F over time
Regulatory AUM
$1.3B
Form ADV, as of Mar 2023
● 100% discretionary ($1.3B)
By client type
Pooled investment vehicles: $1.3B (100.0%) · 9 clients
Pooled investment vehicles
$1.3B · 100%
13F AUM over time
$1.6B
Q1 ’26 · 13F AUM
▲ 18%
11 quarters
Sector Breakdown
Latest filing
Financials24.4% · $391.6M
Industrials18.6% · $299.5M
Health Care15.9% · $254.9M
Unclassified15.8% · $253.0M
Consumer Staples13.2% · $211.7M
Information Technology7.6% · $122.3M
Consumer Discretionary4.5% · $73.1M
Reported Holdings
Q1 2026 · sign up free for past quarters
↗
★ Position spotlightMRCYMERCURY SYS INC · 18.6% of book
🔒
See how this position changed across every quarter
Multi-quarter 13F position history — shares held, buys & sells, and price over time — is a Pro feature. The latest snapshot below stays free.
Security⇅Shares⇅Market Value▼Est. Cost⇅Last Px⇅Est. Return⇅% Portfolio⇅Δ Shares⇅Action⇅
MERCURY SYS INC
MRCY· Industrials
4.11MSH$299.5M~$72.91$109.38▲50.0%18.6%▼ 17.2%Reduced
COOPER COS INC
COO· Health Care
3.57MSH$254.9M~$71.50$71.02▼0.7%15.9%▲ 1.3%Added
FISERV INC
FISV· Financials
4.44MSH$247.5M~$55.80$49.45▼11.4%15.4%▲ 97.5%Added
STATE STR SPDR S&P 500 ETF T
SPY
344KSH$223.5M~$650.34$728.99▲12.1%13.9%▼ 12.2%Reduced
LAMB WESTON HLDGS INC
LW· Consumer Staples
5.01MSH$211.7M~$42.26$45.16▲6.9%13.2%—Unchanged
MARKEL GROUP INC
MKL· Financials
75KSH$144.1M~$1914.07$1920.06▲0.3%9.0%▼ 7.3%Reduced
ALKAMI TECHNOLOGY INC
ALKT· Information Technology
5.43MSH$85.1M~$15.67$16.42▲4.8%5.3%▲ 11.0%Added
SIX FLAGS ENTERTAINMENT CORP
FUN· Consumer Discretionary
4.12MSH$73.1M~$17.75$22.01▲24.0%4.5%—Unchanged
RAPID7 INC
RPD· Information Technology
6.74MSH$37.2M~$5.51$7.61▲38.1%2.3%—Unchanged
ENHABIT INC
2.09MSH$29.5M~$14.09——1.8%—Unchanged
MRCYMERCURY SYS INCReduced
$299.5M· 18.6%· 4.11M SH· ▼ 17.2%· cost $72.91· last $109.38· ▲50.0%
Industrials · COM · SOLE
COOCOOPER COS INCAdded
$254.9M· 15.9%· 3.57M SH· ▲ 1.3%· cost $71.50· last $71.02· ▼0.7%
Health Care · COM · SOLE
FISVFISERV INCAdded
$247.5M· 15.4%· 4.44M SH· ▲ 97.5%· cost $55.80· last $49.45· ▼11.4%
Financials · COM · SOLE
SPYSTATE STR SPDR S&P 500 ETF TReduced
$223.5M· 13.9%· 344K SH· ▼ 12.2%· cost $650.34· last $728.99· ▲12.1%
TR UNIT · SOLE
LWLAMB WESTON HLDGS INCUnchanged
$211.7M· 13.2%· 5.01M SH· —· cost $42.26· last $45.16· ▲6.9%
Consumer Staples · COM · SOLE
MKLMARKEL GROUP INCReduced
$144.1M· 9.0%· 75K SH· ▼ 7.3%· cost $1914.07· last $1920.06· ▲0.3%
Financials · COM · SOLE
ALKTALKAMI TECHNOLOGY INCAdded
$85.1M· 5.3%· 5.43M SH· ▲ 11.0%· cost $15.67· last $16.42· ▲4.8%
Information Technology · COM · SOLE
FUNSIX FLAGS ENTERTAINMENT CORPUnchanged
$73.1M· 4.5%· 4.12M SH· —· cost $17.75· last $22.01· ▲24.0%
Consumer Discretionary · COM · SOLE
RPDRAPID7 INCUnchanged
$37.2M· 2.3%· 6.74M SH· —· cost $5.51· last $7.61· ▲38.1%
Information Technology · COM · SOLE
ENHABIT INCUnchanged
$29.5M· 1.8%· 2.09M SH· —· cost $14.09
COM · SOLE
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