William Blair & Company
UNP icon

William Blair & Company’s Union Pacific UNP Stock Holding History

William Blair & Company’s Portfolio UNP Stock Details UNP Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2017
Q3 		– Sell
-200
Closed -$22K – 1513
2017
Q2 		$22K Hold
200
– – ﹤0.01% 1522
2017
Q1 		$21K Buy
+200
New +$21.3K ﹤0.01% 1375

Other funds holding UNP

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 $3.37T AUM 44.26% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return
Bank of America
Bank of America Charlotte, North Carolina $1.55T AUM 33.47% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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

William Blair & Company reduced its Union Pacific (UNP) stake by 5.3% in Q2 2026, selling an estimated $7.1M and leaving 487,778 shares worth $133M. The position accounts for 0.35% of the portfolio, ranked #64.

William Blair & Company first reported a position in UNP in Q2 2013 and has held it in 53 quarters since. The position peaked at $185M in Q2 2013. 2,884 funds tracked by Wall St. Rank hold UNP as of Q2 2026.

  • William Blair & Company held 487,778 shares of Union Pacific worth $133M as of Q2 2026.
  • William Blair & Company sold 27,051 Union Pacific shares in Q2 2026, an estimated $7.1M.
  • Union Pacific made up 0.35% of William Blair & Company's portfolio in Q2 2026, its #64 holding.
  • William Blair & Company first reported a position in Union Pacific in Q2 2013 and has held it in 53 quarters since.
  • William Blair & Company's Union Pacific position peaked at $185M in Q2 2013.
  • 2,884 funds tracked by Wall St. Rank held Union Pacific as of Q2 2026.

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