William Blair & Company
TRU icon

William Blair & Company’s TransUnion TRU Stock Holding History

William Blair & Company’s Portfolio TRU Stock Details TRU Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$790K Sell
11,413
-247,563
-96% -$18.9M ﹤0.01% 1014
2025
Q4 		$22.2M Sell
258,976
-95,547
-27% -$7.85M 0.06% 224
2025
Q3 		$29.7M Buy
354,523
+301,899
+574% +$27.4M 0.08% 184
2025
Q2 		$4.63M Sell
52,624
-21,239
-29% -$1.77M 0.01% 513
2025
Q1 		$6.13M Buy
73,863
+58,156
+370% +$5.31M 0.02% 429
2024
Q4 		$1.46M Buy
15,707
+2,746
+21% +$278K ﹤0.01% 791
2024
Q3 		$1.36M Buy
12,961
+3,582
+38% +$323K ﹤0.01% 815
2024
Q2 		$696K Sell
9,379
-160
-2% -$11.9K ﹤0.01% 987
2024
Q1 		$761K Sell
9,539
-789
-8% -$57.8K ﹤0.01% 959
2023
Q4 		$710K Sell
10,328
-14,247
-58% -$868K ﹤0.01% 969
2023
Q3 		$1.76M Buy
24,575
+1,592
+7% +$125K 0.01% 683
2023
Q2 		$1.8M Buy
22,983
+121
+0.5% +$8.37K 0.01% 688
2023
Q1 		$1.42M Sell
22,862
-251
-1% -$16.4K 0.01% 739
2022
Q4 		$1.31M Sell
23,113
-5,467
-19% -$320K 0.01% 746
2022
Q3 		$1.7M Sell
28,580
-3,711
-11% -$285K 0.01% 657
2022
Q2 		$2.58M Sell
32,291
-3,327
-9% -$286K 0.01% 575
2022
Q1 		$3.68M Buy
35,618
+778
+2% +$78.9K 0.01% 542
2021
Q4 		$4.13M Buy
34,840
+3,920
+13% +$449K 0.01% 523
2021
Q3 		$3.47M Buy
30,920
+2,852
+10% +$335K 0.01% 546
2021
Q2 		$3.08M Buy
28,068
+1,141
+4% +$119K 0.01% 588
2021
Q1 		$2.42M Sell
26,927
-9,904
-27% -$893K 0.01% 628
2020
Q4 		$3.65M Sell
36,831
-6,068
-14% -$556K 0.01% 503
2020
Q3 		$3.61M Sell
42,899
-2,657
-6% -$229K 0.02% 463
2020
Q2 		$3.96M Sell
45,556
-891
-2% -$71.1K 0.02% 423
2020
Q1 		$3.07M Sell
46,447
-10,879
-19% -$940K 0.02% 434
2019
Q4 		$4.91M Buy
57,326
+9,726
+20% +$810K 0.03% 399
2019
Q3 		$3.86M Sell
47,600
-593
-1% -$47.7K 0.02% 427
2019
Q2 		$3.54M Sell
48,193
-781
-2% -$53.4K 0.02% 450
2019
Q1 		$3.27M Buy
48,974
+7,459
+18% +$462K 0.02% 443
2018
Q4 		$2.36M Sell
41,515
-4,752
-10% -$304K 0.02% 494
2018
Q3 		$3.4M Buy
46,267
+13,995
+43% +$1.04M 0.02% 448
2018
Q2 		$2.31M Sell
32,272
-1,852
-5% -$123K 0.02% 523
2018
Q1 		$1.94M Sell
34,124
-2,463
-7% -$142K 0.01% 560
2017
Q4 		$2.01M Buy
36,587
+2,504
+7% +$133K 0.01% 572
2017
Q3 		$1.61M Buy
34,083
+4,852
+17% +$222K 0.01% 601
2017
Q2 		$1.27M Buy
29,231
+16,024
+121% +$664K 0.01% 682
2017
Q1 		$495K Sell
13,207
-10,997
-45% -$386K ﹤0.01% 907
2016
Q4 		$749K Sell
24,204
-72,706
-75% -$2.29M 0.01% 708
2016
Q3 		$3.34M Sell
96,910
-18,915
-16% -$633K 0.03% 388
2016
Q2 		$3.87M Buy
+115,825
New +$3.56M 0.04% 331

Other funds holding TRU

Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $298B AUM 21.96% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dodge & Cox
Dodge & Cox San Francisco, California $182B AUM 14.68% 1-Year Est. Return
IFP
Independent Franchise Partners London, United Kingdom $14.3B AUM 3.49% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

William Blair & Company's TRU Position: Q1 2026 in Review

William Blair & Company reduced its TransUnion (TRU) stake by 96% in Q1 2026, selling an estimated $18.9M and leaving 11,413 shares worth $790K. The position accounts for ﹤0.01% of the portfolio, ranked #1014.

William Blair & Company first reported a position in TRU in Q2 2016 and has held it in 40 quarters since. The position peaked at $29.7M in Q3 2025. 559 funds tracked by Wall St. Rank hold TRU as of Q1 2026.

  • William Blair & Company held 11,413 shares of TransUnion worth $790K as of Q1 2026.
  • William Blair & Company sold 247,563 TransUnion shares in Q1 2026, an estimated $18.9M.
  • TransUnion made up ﹤0.01% of William Blair & Company's portfolio in Q1 2026, its #1014 holding.
  • William Blair & Company first reported a position in TransUnion in Q2 2016 and has held it in 40 quarters since.
  • William Blair & Company's TransUnion position peaked at $29.7M in Q3 2025.
  • 559 funds tracked by Wall St. Rank held TransUnion as of Q1 2026.

Based on William Blair & Company's 13F filing for Q1 2026, filed 8 May 2026.