William Mack & Associates
RIVN icon

William Mack & Associates’s Rivian RIVN Stock Holding History

William Mack & Associates’s Portfolio RIVN Stock Details RIVN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$4.18K Buy
+280
New +$4.54K ﹤0.01% 469

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Baillie Gifford & Co
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JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $824B AUM 37.44% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.96T AUM 27.49% 1-Year Est. Return

William Mack & Associates's RIVN Position: Q3 2026 in Review

William Mack & Associates opened a new position in Rivian (RIVN) in Q3 2026: 280 shares worth $4.18K. The stake represents ﹤0.01% of the portfolio and ranks #469 among its holdings.

698 funds tracked by Wall St. Rank hold RIVN as of Q3 2026.

  • William Mack & Associates held 280 shares of Rivian worth $4.18K as of Q3 2026.
  • Rivian was a new William Mack & Associates position in Q3 2026.
  • Rivian made up ﹤0.01% of William Mack & Associates's portfolio in Q3 2026, its #469 holding.
  • 698 funds tracked by Wall St. Rank held Rivian as of Q3 2026.

Based on William Mack & Associates's 13F filing for Q3 2026, filed 27 Oct 2026.