William Blair Investment Management
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William Blair Investment Management’s Phillips 66 PSX Stock Holding History

William Blair Investment Management’s Portfolio PSX Stock Details PSX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$217K Buy
1,285
+15
+1% +$2.58K ﹤0.01% 400
2026
Q1 		$231K Buy
+1,270
New +$199K ﹤0.01% 407
2025
Q4 		– Sell
-1,513
Closed -$206K – 448
2025
Q3 		$206K Buy
+1,513
New +$194K ﹤0.01% 411
2024
Q3 		– Sell
-1,428
Closed -$202K – 443
2024
Q2 		$202K Hold
1,428
– – ﹤0.01% 409
2024
Q1 		$233K Sell
1,428
-472
-25% -$68K ﹤0.01% 393
2023
Q4 		$253K Sell
1,900
-39
-2% -$4.66K ﹤0.01% 387
2023
Q3 		$233K Buy
+1,939
New +$218K ﹤0.01% 387

Other funds holding PSX

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
EIM
Elliott Investment Management West Palm Beach, Florida $22.7B AUM 59.88% 1-Year Est. Return
Wells Fargo
Wells Fargo San Francisco, California $617B AUM 30.33% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

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

William Blair Investment Management increased its Phillips 66 (PSX) stake by 1.2% in Q2 2026, buying an estimated $2.58K and bringing the position to 1,285 shares worth $217K. The position accounts for ﹤0.01% of the portfolio, ranked #400.

William Blair Investment Management first reported a position in PSX in Q3 2023 and has held it in 7 quarters since. The position peaked at $253K in Q4 2023. 2,107 funds tracked by Wall St. Rank hold PSX as of Q2 2026.

  • William Blair Investment Management held 1,285 shares of Phillips 66 worth $217K as of Q2 2026.
  • William Blair Investment Management bought 15 Phillips 66 shares in Q2 2026, an estimated $2.58K.
  • Phillips 66 made up ﹤0.01% of William Blair Investment Management's portfolio in Q2 2026, its #400 holding.
  • William Blair Investment Management first reported a position in Phillips 66 in Q3 2023 and has held it in 7 quarters since.
  • William Blair Investment Management's Phillips 66 position peaked at $253K in Q4 2023.
  • 2,107 funds tracked by Wall St. Rank held Phillips 66 as of Q2 2026.

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