SCI
RBRK icon

S&CO Inc’s Rubrik RBRK Stock Holding History

S&CO Inc’s Portfolio RBRK Stock Details RBRK Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$6.18M Buy
54,032
+420
+0.8% +$38.6K 0.35% 58
2026
Q2 		$4.3M Hold
53,612
– – 0.25% 79
2026
Q1 		$2.62M Hold
53,612
– – 0.16% 101
2025
Q4 		$4.1M Hold
53,612
– – 0.25% 81
2025
Q3 		$4.41M Buy
53,612
+27,179
+103% +$2.34M 0.27% 79
2025
Q2 		$2.37M Buy
26,433
+13,224
+100% +$1.05M 0.15% 107
2025
Q1 		$805K Buy
+13,209
New +$902K 0.05% 151

Other funds holding RBRK

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
First Trust Advisors
First Trust Advisors Wheaton, Illinois $170B AUM 38.25% 1-Year Est. Return
VOYA Investment Management
VOYA Investment Management Atlanta, Georgia $109B AUM 51.53% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $30.6B AUM 42.55% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return

S&CO Inc's RBRK Position: Q3 2026 in Review

S&CO Inc increased its Rubrik (RBRK) stake by 0.78% in Q3 2026, buying an estimated $38.6K and bringing the position to 54,032 shares worth $6.18M. The position accounts for 0.35% of the portfolio, ranked #58.

S&CO Inc first reported a position in RBRK in Q1 2025 and has held it in 7 quarters since. 517 funds tracked by Wall St. Rank hold RBRK as of Q3 2026.

  • S&CO Inc held 54,032 shares of Rubrik worth $6.18M as of Q3 2026.
  • S&CO Inc bought 420 Rubrik shares in Q3 2026, an estimated $38.6K.
  • Rubrik made up 0.35% of S&CO Inc's portfolio in Q3 2026, its #58 holding.
  • S&CO Inc first reported a position in Rubrik in Q1 2025 and has held it in 7 quarters since.
  • 517 funds tracked by Wall St. Rank held Rubrik as of Q3 2026.

Based on S&CO Inc's 13F filing for Q3 2026, filed 10 Nov 2026.