William Blair & Company
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William Blair & Company’s Prosperity Bancshares PB Stock Holding History

William Blair & Company’s Portfolio PB Stock Details PB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$223K Buy
+3,054
New +$212K ﹤0.01% 1534
2014
Q3 		– Sell
-211,125
Closed -$13.2M – 2148
2014
Q2 		$13.2M Sell
211,125
-11,510
-5% -$697K 0.02% 756
2014
Q1 		$14.7M Buy
222,635
+34,130
+18% +$2.16M 0.02% 684
2013
Q4 		$11.9M Sell
188,505
-41,820
-18% -$2.64M 0.02% 739
2013
Q3 		$14.2M Buy
230,325
+6,230
+3% +$370K 0.03% 625
2013
Q2 		$11.6M Buy
+224,095
New +$10.8M 0.02% 656

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State Street
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Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Barrow, Hanley, Mewhinney & Strauss
Barrow, Hanley, Mewhinney & Strauss Dallas, Texas $33B AUM 40.62% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

William Blair & Company's PB Position: Q2 2026 in Review

William Blair & Company opened a new position in Prosperity Bancshares (PB) in Q2 2026: 3,054 shares worth $223K. The stake represents ﹤0.01% of the portfolio and ranks #1534 among its holdings. This is a return to the name: William Blair & Company previously reported a position in PB as recently as Q2 2014.

William Blair & Company first reported a position in PB in Q2 2013 and has held it in 6 quarters since. The position peaked at $14.7M in Q1 2014. 455 funds tracked by Wall St. Rank hold PB as of Q2 2026.

  • William Blair & Company held 3,054 shares of Prosperity Bancshares worth $223K as of Q2 2026.
  • Prosperity Bancshares was a new William Blair & Company position in Q2 2026.
  • Prosperity Bancshares made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1534 holding.
  • William Blair & Company first reported a position in Prosperity Bancshares in Q2 2013 and has held it in 6 quarters since.
  • William Blair & Company's Prosperity Bancshares position peaked at $14.7M in Q1 2014.
  • 455 funds tracked by Wall St. Rank held Prosperity Bancshares as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.