Calamos Advisors
ISRG icon

Calamos Advisors’s Intuitive Surgical ISRG Stock Holding History

Calamos Advisors’s Portfolio ISRG Stock Details ISRG Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2016
Q4 		– Sell
-954
Closed -$578K – 654
2016
Q3 		$578K Sell
954
-36
-4% -$2.76K ﹤0.01% 550
2016
Q2 		$702K Buy
+990
New +$69.7K ﹤0.01% 536

Other funds holding ISRG

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM

Calamos Advisors's ISRG Position: Q2 2026 in Review

Calamos Advisors reduced its Intuitive Surgical (ISRG) stake by 21% in Q2 2026, selling an estimated $15.2M and leaving 131,023 shares worth $52.1M. The position accounts for 0.17% of the portfolio, ranked #118.

Calamos Advisors first reported a position in ISRG in Q2 2013 and has held it in 35 quarters since. The position peaked at $76.9M in Q4 2025. 2,258 funds tracked by Wall St. Rank hold ISRG as of Q2 2026.

  • Calamos Advisors held 131,023 shares of Intuitive Surgical worth $52.1M as of Q2 2026.
  • Calamos Advisors sold 34,812 Intuitive Surgical shares in Q2 2026, an estimated $15.2M.
  • Intuitive Surgical made up 0.17% of Calamos Advisors's portfolio in Q2 2026, its #118 holding.
  • Calamos Advisors first reported a position in Intuitive Surgical in Q2 2013 and has held it in 35 quarters since.
  • Calamos Advisors's Intuitive Surgical position peaked at $76.9M in Q4 2025.
  • 2,258 funds tracked by Wall St. Rank held Intuitive Surgical as of Q2 2026.

Based on Calamos Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.