Ken Griffin
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Ken Griffin’s AmpliTech AMPG Stock Holding History

Ken Griffin’s Portfolio AMPG Stock Details AMPG Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$416K Sell
218,900
-99,100
-31% -$293K ﹤0.01% 9742
2025
Q4 		$951K Buy
+318,000
New +$1.07M ﹤0.01% 7504

Other funds holding AMPG

BA
Bard Associates Chicago, Illinois $451M AUM 66.6% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
CDMG
Creek Drive Management Group San Francisco, California $439M AUM
CCC
Cable Car Capital San Francisco, California $289M AUM 26.33% 1-Year Est. Return
IWC
Integrated Wealth Concepts Waltham, Massachusetts $12.5B AUM 18.49% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
PHS
Pekin Hardy Strauss Chicago, Illinois $1.14B AUM 37.36% 1-Year Est. Return
VFT
Vanguard Fiduciary Trust Malvern, Pennsylvania $396B AUM

Ken Griffin's AMPG Position: Q1 2026 in Review

Ken Griffin opened a new position in AmpliTech (AMPG) in Q1 2026: 20,460 shares worth $38.9K. The stake represents ﹤0.01% of the portfolio and ranks #12497 among its holdings. This is a return to the name: Ken Griffin previously reported a position in AMPG as recently as Q3 2024.

Ken Griffin first reported a position in AMPG in Q1 2023 and has held it in 8 quarters since. The position peaked at $139K in Q2 2023. 38 funds tracked by Wall St. Rank hold AMPG as of Q1 2026.

  • Ken Griffin held 20,460 shares of AmpliTech worth $38.9K as of Q1 2026.
  • AmpliTech was a new Ken Griffin position in Q1 2026.
  • AmpliTech made up ﹤0.01% of Ken Griffin's portfolio in Q1 2026, its #12497 holding.
  • Ken Griffin first reported a position in AmpliTech in Q1 2023 and has held it in 8 quarters since.
  • Ken Griffin's AmpliTech position peaked at $139K in Q2 2023.
  • 38 funds tracked by Wall St. Rank held AmpliTech as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.