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Mairs & Power Inc’s Ambarella AMBA Stock Holding History

Mairs & Power Inc’s Portfolio AMBA Stock Details AMBA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$10.8M Buy
126,353
+8,772
+7% +$604K 0.1% 77
2026
Q1 		$6.05M Buy
+117,581
New +$7.33M 0.06% 95

Other funds holding AMBA

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Manulife (Manufacturers Life Insurance)
Manulife (Manufacturers Life Insurance) Canada, Ontario, Canada $128B AUM 35.83% 1-Year Est. Return
Legal & General Group
Legal & General Group London, United Kingdom $480B AUM 42.84% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
MMH
Menora Mivtachim Holdings Ramat Gan, Israel $25.6B AUM 50.04% 1-Year Est. Return
SIMG
Stephens Investment Management Group Houston, Texas $9.33B AUM 56.1% 1-Year Est. Return

Mairs & Power Inc's AMBA Position: Q2 2026 in Review

Mairs & Power Inc increased its Ambarella (AMBA) stake by 7.5% in Q2 2026, buying an estimated $604K and bringing the position to 126,353 shares worth $10.8M. The position accounts for 0.1% of the portfolio, ranked #77.

Mairs & Power Inc first reported a position in AMBA in Q1 2026 and has held it in 2 quarters since. 339 funds tracked by Wall St. Rank hold AMBA as of Q2 2026.

  • Mairs & Power Inc held 126,353 shares of Ambarella worth $10.8M as of Q2 2026.
  • Mairs & Power Inc bought 8,772 Ambarella shares in Q2 2026, an estimated $604K.
  • Ambarella made up 0.1% of Mairs & Power Inc's portfolio in Q2 2026, its #77 holding.
  • Mairs & Power Inc first reported a position in Ambarella in Q1 2026 and has held it in 2 quarters since.
  • 339 funds tracked by Wall St. Rank held Ambarella as of Q2 2026.

Based on Mairs & Power Inc's 13F filing for Q2 2026, filed 14 Aug 2026.