William Blair & Company’s Union Pacific UNP Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q1 | $125M | Buy |
514,829
+44,455
| +9% | +$10.9M | 0.36% | 64 |
|
|
2025
Q4 | $109M | Sell |
470,374
-13,627
| -3% | -$3.11M | 0.29% | 83 |
|
|
2025
Q3 | $114M | Sell |
484,001
-13,858
| -3% | -$3.12M | 0.3% | 79 |
|
|
2025
Q2 | $115M | Sell |
497,859
-19,538
| -4% | -$4.34M | 0.32% | 75 |
|
|
2025
Q1 | $122M | Sell |
517,397
-39,233
| -7% | -$9.44M | 0.37% | 66 |
|
|
2024
Q4 | $127M | Sell |
556,630
-41,506
| -7% | -$9.83M | 0.37% | 66 |
|
|
2024
Q3 | $147M | Sell |
598,136
-1,998
| -0.3% | -$484K | 0.43% | 59 |
|
|
2024
Q2 | $136M | Buy |
600,134
+73,036
| +14% | +$17.1M | 0.42% | 62 |
|
|
2024
Q1 | $130M | Sell |
527,098
-2,130
| -0.4% | -$524K | 0.41% | 62 |
|
|
2023
Q4 | $130M | Buy |
529,228
+3,996
| +0.8% | +$879K | 0.44% | 57 |
|
|
2023
Q3 | $107M | Sell |
525,232
-11,919
| -2% | -$2.6M | 0.41% | 63 |
|
|
2023
Q2 | $110M | Buy |
537,151
+16,610
| +3% | +$3.3M | 0.4% | 60 |
|
|
2023
Q1 | $105M | Sell |
520,541
-19,743
| -4% | -$4M | 0.42% | 60 |
|
|
2022
Q4 | $112M | Sell |
540,284
-4,513
| -0.8% | -$926K | 0.49% | 50 |
|
|
2022
Q3 | $106M | Buy |
544,797
+20,610
| +4% | +$4.56M | 0.49% | 47 |
|
|
2022
Q2 | $112M | Sell |
524,187
-24,633
| -4% | -$5.6M | 0.5% | 47 |
|
|
2022
Q1 | $150M | Buy |
548,820
+11,279
| +2% | +$2.85M | 0.53% | 43 |
|
|
2021
Q4 | $135M | Buy |
537,541
+6,817
| +1% | +$1.61M | 0.42% | 52 |
|
|
2021
Q3 | $104M | Buy |
530,724
+41,807
| +9% | +$9.03M | 0.35% | 67 |
|
|
2021
Q2 | $108M | Buy |
488,917
+6,882
| +1% | +$1.53M | 0.37% | 60 |
|
|
2021
Q1 | $106M | Buy |
482,035
+6,707
| +1% | +$1.41M | 0.4% | 57 |
|
|
2020
Q4 | $99M | Sell |
475,328
-2,665
| -0.6% | -$532K | 0.36% | 65 |
|
|
2020
Q3 | $94.1M | Buy |
477,993
+5,905
| +1% | +$1.1M | 0.4% | 56 |
|
|
2020
Q2 | $79.8M | Buy |
472,088
+11,994
| +3% | +$1.92M | 0.38% | 60 |
|
|
2020
Q1 | $64.9M | Sell |
460,094
-31,154
| -6% | -$5.15M | 0.41% | 57 |
|
|
2019
Q4 | $88.8M | Buy |
491,248
+660
| +0.1% | +$113K | 0.46% | 52 |
|
|
2019
Q3 | $79.5M | Sell |
490,588
-7,285
| -1% | -$1.22M | 0.46% | 52 |
|
|
2019
Q2 | $84.2M | Buy |
497,873
+2,003
| +0.4% | +$343K | 0.48% | 50 |
|
|
2019
Q1 | $82.9M | Buy |
495,870
+5,973
| +1% | +$961K | 0.51% | 48 |
|
|
2018
Q4 | $67.7M | Sell |
489,897
-8,888
| -2% | -$1.32M | 0.49% | 51 |
|
|
2018
Q3 | $81.2M | Sell |
498,785
-8,394
| -2% | -$1.26M | 0.5% | 49 |
|
|
2018
Q2 | $71.9M | Sell |
507,179
-61,896
| -11% | -$8.63M | 0.49% | 52 |
|
|
2018
Q1 | $76.5M | Sell |
569,075
-17,786
| -3% | -$2.39M | 0.54% | 46 |
|
|
2017
Q4 | $78.7M | Sell |
586,861
-8,369
| -1% | -$1.01M | 0.53% | 46 |
|
|
2017
Q3 | $69M | Sell |
595,230
-30,663
| -5% | -$3.29M | 0.52% | 49 |
|
|
2017
Q2 | $68.2M | Buy |
625,893
+1,844
| +0.3% | +$201K | 0.51% | 50 |
|
|
2017
Q1 | $66.3M | Sell |
624,049
-25,853
| -4% | -$2.76M | 0.53% | 48 |
|
|
2016
Q4 | $67.4M | Sell |
649,902
-5,815
| -0.9% | -$572K | 0.6% | 41 |
|
|
2016
Q3 | $64M | Buy |
655,717
+3,335
| +0.5% | +$312K | 0.57% | 47 |
|
|
2016
Q2 | $56.9M | Sell |
652,382
-55,459
| -8% | -$4.69M | 0.53% | 53 |
|
|
2016
Q1 | $56.3M | Buy |
707,841
+74,769
| +12% | +$5.78M | 0.53% | 54 |
|
|
2015
Q4 | $49.5M | Sell |
633,072
-6,976
| -1% | -$598K | 0.46% | 67 |
|
|
2015
Q3 | $56.6M | Sell |
640,048
-1,132,481
| -64% | -$103M | 0.49% | 50 |
|
|
2015
Q2 | $169M | Buy |
1,772,529
+1,235,392
| +230% | +$129M | 0.25% | 111 |
|
|
2015
Q1 | $58.2M | Sell |
537,137
-15,899
| -3% | -$1.87M | 0.09% | 292 |
|
|
2014
Q4 | $65.9M | Sell |
553,036
-661,220
| -54% | -$75.9M | 0.11% | 264 |
|
|
2014
Q3 | $132M | Sell |
1,214,256
-148,583
| -11% | -$15.4M | 0.23% | 141 |
|
|
2014
Q2 | $136M | Sell |
1,362,839
-84,223
| -6% | -$8.16M | 0.22% | 141 |
|
|
2014
Q1 | $136M | Sell |
1,447,062
-16,096
| -1% | -$1.43M | 0.22% | 135 |
|
|
2013
Q4 | $123M | Sell |
1,463,158
-18,384
| -1% | -$1.46M | 0.2% | 147 |
|
|
2013
Q3 | $115M | Sell |
1,481,542
-921,786
| -38% | -$72.8M | 0.2% | 149 |
|
|
2013
Q2 | $185M | Buy |
+2,403,328
| New | +$181M | 0.37% | 62 |
|
Other funds holding UNP
VCM
VPM
William Blair & Company's UNP Position: Q1 2026 in Review
William Blair & Company increased its Union Pacific (UNP) stake by 9.5% in Q1 2026, buying an estimated $10.9M and bringing the position to 514,829 shares worth $125M. The position accounts for 0.36% of the portfolio, ranked #64.
William Blair & Company first reported a position in UNP in Q2 2013 and has held it in 52 quarters since. The position peaked at $185M in Q2 2013. 2,764 funds tracked by Wall St. Rank hold UNP as of Q1 2026.
- William Blair & Company held 514,829 shares of Union Pacific worth $125M as of Q1 2026.
- William Blair & Company bought 44,455 Union Pacific shares in Q1 2026, an estimated $10.9M.
- Union Pacific made up 0.36% of William Blair & Company's portfolio in Q1 2026, its #64 holding.
- William Blair & Company first reported a position in Union Pacific in Q2 2013 and has held it in 52 quarters since.
- William Blair & Company's Union Pacific position peaked at $185M in Q2 2013.
- 2,764 funds tracked by Wall St. Rank held Union Pacific as of Q1 2026.
Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.