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Jana Partners
Portfolio: Top Holdings & Stock Picks

Jana Partners Management, Lp

Activist Investing Special Situations / Event-Driven

Jana Partners (Jana Partners Management, Lp) disclosed 12 total holdings in its latest 13F filing dated 2025-09-30, with a portfolio value of $2.07 B billion and a turnover rate of 15.9%.

Portfolio Value
$2.07 B
Total Holdings
12
Latest Filing
Q3 2025
Nov 14, 2025
Turnover Rate
15.91%

Jana Partners Top Holdings of 2025-09-30

Ticker Name Shares Value % of Portfolio Time Held % Change
5.96 M $461.26 M 22.33% 4 Years -11.76%
LW
5.01 M $290.9 M 14.08% 1 Years -30.75%
MKL
147,411 $281.76 M 13.64% 0.75 Years -2.66%
386,637 $257.57 M 12.47% 7.5 Years -24.64%
COO
2.43 M $166.92 M 8.08% New Buy +100.00%
1.88 M $153.62 M 7.44% 1.7 Years -47.87%
RPD
6.5 M $121.91 M 5.90% 1.3 Years +13.48%
THS
5.82 M $117.65 M 5.70% 4.7 Years 0.00%
FUN
4.05 M $92.01 M 4.45% New Buy +100.00%
1.05 M $57.76 M 2.80% 0.5 Years +4.11%

Recent Moves

Significant New Position
+2.43 M Shares | +$166.92 M Value
Continues to build a major stake in the Healthcare sector
Q3 2025
Added to Core Holding
+772,194 Shares | +$14.48 M Value
Largest position increase in Technology sector
Q3 2025
Reduced Exposure to Position
-1.73 M Shares | -$141.05 M Value
Significant reduction in holdings of Technology
Q3 2025
Complete Exit
-164,029 Shares | -$24.09 M Value
Cleared WEX, sector remains in portfolio
Q3 2025

Jana Partners's Historical Top Holdings Breakdown

Portfolio Date:

Jana Partners Top Stock Picks

Ticker Name Date Activity Shares Shares Change Value Change
COO
09/30/2025 New Buy 2.43 M 2.43 M $166.92 M
09/30/2025 Reduce -47.9% 1.88 M -1.73 M $141.05 M
LW
09/30/2025 Reduce -30.8% 5.01 M -2.22 M $129.15 M
FUN
09/30/2025 New Buy 4.05 M 4.05 M $92.01 M
SPY
09/30/2025 Reduce -24.6% 386,637 -126,416 $84.22 M
09/30/2025 Reduce -11.8% 5.96 M -793,932 $61.45 M
09/30/2025 New Buy 1.89 M 1.89 M $47.01 M
WEX
09/30/2025 Sold Out 164,029 -164,029 $24.09 M
RPD
09/30/2025 Add 13.5% 6.5 M 772,194 $14.48 M
MKL
09/30/2025 Reduce -2.7% 147,411 -4,021 $7.69 M

Jana Partners's Sector Breakdowns

Portfolio Date:

About Jana Partners

JANA Partners LLC is an investment management firm founded by Barry Rosenstein. It is one of the most well-known activist hedge funds in the market. The firm is known for taking significant stakes in public companies and publicly advocating for corporate actions to improve their financial performance and stock price. Rosenstein and his team have a long track record of successful activist campaigns.

Frequently Asked Questions

As of 2025-09-30, Jana Partners holds 12 stocks. Top positions include MRCY, LW, MKL, SPY, COO. For full portfolio details, please visit Jana Partners’s portfolio.

In Q3 2025, Jana Partners’s largest purchase by dollar amount was COO. For complete transaction details, please visit Jana Partners’s portfolio.

According to the 13F filing for Q3 2025, Jana Partners increased their stake in RPD.

Jana Partners’s firm may occasionally request confidential treatment under SEC rule 13F-HR, which allows temporary non-disclosure of certain positions.