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John Overdeck’s Halozyme HALO Stock Holding History

John Overdeck’s Portfolio HALO Stock Details HALO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2021
Q1 		– Sell
-17,500
Closed -$747K – 3980
2020
Q4 		$747K Buy
+17,500
New +$629K ﹤0.01% 2213
2018
Q2 		– Sell
-10,000
Closed -$196K – 3437
2018
Q1 		$196K Buy
+10,000
New +$194K ﹤0.01% 2983

Other funds holding HALO

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return

John Overdeck's HALO Position: Q2 2026 in Review

John Overdeck increased its Halozyme (HALO) stake by 4.3% in Q2 2026, buying an estimated $4.66M and bringing the position to 1,653,285 shares worth $129M. The position accounts for 0.09% of the portfolio, ranked #240.

John Overdeck first reported a position in HALO in Q2 2015 and has held it in 36 quarters since. 665 funds tracked by Wall St. Rank hold HALO as of Q2 2026.

  • John Overdeck held 1,653,285 shares of Halozyme worth $129M as of Q2 2026.
  • John Overdeck bought 68,324 Halozyme shares in Q2 2026, an estimated $4.66M.
  • Halozyme made up 0.09% of John Overdeck's portfolio in Q2 2026, its #240 holding.
  • John Overdeck first reported a position in Halozyme in Q2 2015 and has held it in 36 quarters since.
  • 665 funds tracked by Wall St. Rank held Halozyme as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.