William Blair Investment Management
GH icon

William Blair Investment Management’s Guardant Health GH Stock Holding History

William Blair Investment Management’s Portfolio GH Stock Details GH Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$197M Buy
1,311,320
+360,206
+38% +$39.2M 0.59% 38
2026
Q1 		$87.9M Buy
+951,114
New +$95.5M 0.29% 98

Other funds holding GH

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
Capital International Investors
Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return

William Blair Investment Management's GH Position: Q2 2026 in Review

William Blair Investment Management increased its Guardant Health (GH) stake by 38% in Q2 2026, buying an estimated $39.2M and bringing the position to 1,311,320 shares worth $197M. The position accounts for 0.59% of the portfolio, ranked #38.

William Blair Investment Management first reported a position in GH in Q1 2026 and has held it in 2 quarters since. 597 funds tracked by Wall St. Rank hold GH as of Q2 2026.

  • William Blair Investment Management held 1,311,320 shares of Guardant Health worth $197M as of Q2 2026.
  • William Blair Investment Management bought 360,206 Guardant Health shares in Q2 2026, an estimated $39.2M.
  • Guardant Health made up 0.59% of William Blair Investment Management's portfolio in Q2 2026, its #38 holding.
  • William Blair Investment Management first reported a position in Guardant Health in Q1 2026 and has held it in 2 quarters since.
  • 597 funds tracked by Wall St. Rank held Guardant Health as of Q2 2026.

Based on William Blair Investment Management's 13F filing for Q2 2026, filed 12 Aug 2026.