William Blair & Company
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William Blair & Company’s Moody's MCO Stock Holding History

William Blair & Company’s Portfolio MCO Stock Details MCO Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$29.2M Buy
66,954
+41,600
+164% +$19.7M 0.08% 197
2025
Q4 		$13M Sell
25,354
-219
-0.9% -$107K 0.03% 309
2025
Q3 		$12.2M Sell
25,573
-232
-0.9% -$117K 0.03% 314
2025
Q2 		$12.9M Sell
25,805
-17,940
-41% -$8.31M 0.04% 305
2025
Q1 		$20.4M Sell
43,745
-1,325
-3% -$638K 0.06% 214
2024
Q4 		$21.3M Sell
45,070
-1,867
-4% -$891K 0.06% 215
2024
Q3 		$22.3M Buy
46,937
+18,692
+66% +$8.66M 0.07% 215
2024
Q2 		$11.9M Sell
28,245
-1,289
-4% -$513K 0.04% 299
2024
Q1 		$11.6M Buy
29,534
+489
+2% +$189K 0.04% 308
2023
Q4 		$11.3M Sell
29,045
-119
-0.4% -$41.4K 0.04% 294
2023
Q3 		$9.22M Sell
29,164
-93
-0.3% -$31.6K 0.04% 314
2023
Q2 		$10.2M Sell
29,257
-30
-0.1% -$9.51K 0.04% 308
2023
Q1 		$8.96M Sell
29,287
-1,824
-6% -$551K 0.04% 321
2022
Q4 		$8.67M Sell
31,111
-353
-1% -$96.6K 0.04% 321
2022
Q3 		$7.65M Buy
31,464
+1,432
+5% +$416K 0.04% 329
2022
Q2 		$8.17M Buy
30,032
+755
+3% +$226K 0.04% 328
2022
Q1 		$9.88M Sell
29,277
-312
-1% -$105K 0.03% 332
2021
Q4 		$11.6M Buy
29,589
+300
+1% +$116K 0.04% 326
2021
Q3 		$10.4M Buy
29,289
+136
+0.5% +$51.2K 0.04% 322
2021
Q2 		$10.6M Buy
29,153
+14
+0% +$4.66K 0.04% 317
2021
Q1 		$8.7M Sell
29,139
-361
-1% -$102K 0.03% 345
2020
Q4 		$8.56M Sell
29,500
-8,261
-22% -$2.31M 0.03% 334
2020
Q3 		$10.9M Sell
37,761
-5,893
-13% -$1.68M 0.05% 263
2020
Q2 		$12M Buy
43,654
+416
+1% +$106K 0.06% 245
2020
Q1 		$9.14M Buy
43,238
+729
+2% +$177K 0.06% 240
2019
Q4 		$10.1M Sell
42,509
-106
-0.2% -$23.6K 0.05% 264
2019
Q3 		$8.73M Sell
42,615
-652
-2% -$137K 0.05% 274
2019
Q2 		$8.45M Buy
43,267
+938
+2% +$178K 0.05% 289
2019
Q1 		$7.67M Buy
42,329
+1
+0% +$164 0.05% 294
2018
Q4 		$5.93M Buy
42,328
+1,111
+3% +$168K 0.04% 307
2018
Q3 		$6.89M Sell
41,217
-925
-2% -$163K 0.04% 317
2018
Q2 		$7.19M Sell
42,142
-1,830
-4% -$310K 0.05% 286
2018
Q1 		$7.09M Sell
43,972
-1,682
-4% -$272K 0.05% 283
2017
Q4 		$6.74M Buy
45,654
+949
+2% +$139K 0.05% 294
2017
Q3 		$6.22M Buy
44,705
+1,461
+3% +$192K 0.05% 286
2017
Q2 		$5.26M Buy
43,244
+150
+0.3% +$17.6K 0.04% 330
2017
Q1 		$4.82M Sell
43,094
-171
-0.4% -$18.3K 0.04% 329
2016
Q4 		$4.08M Sell
43,265
-14,270
-25% -$1.44M 0.04% 344
2016
Q3 		$6.23M Sell
57,535
-392
-0.7% -$41.2K 0.06% 273
2016
Q2 		$5.43M Sell
57,927
-12,870
-18% -$1.24M 0.05% 284
2016
Q1 		$6.84M Sell
70,797
-20,883
-23% -$1.88M 0.06% 240
2015
Q4 		$9.2M Sell
91,680
-165,837
-64% -$16.6M 0.09% 214
2015
Q3 		$25.3M Sell
257,517
-1,768,235
-87% -$188M 0.22% 118
2015
Q2 		$219M Buy
2,025,752
+672,091
+50% +$72.4M 0.33% 75
2015
Q1 		$141M Buy
1,353,661
+1,310,430
+3,031% +$127M 0.22% 147
2014
Q4 		$4.14M Buy
43,231
+6
+0% +$582 0.01% 1085
2014
Q3 		$4.08M Buy
43,225
+569
+1% +$52.1K 0.01% 1066
2014
Q2 		$3.74M Buy
42,656
+1,595
+4% +$131K 0.01% 1074
2014
Q1 		$3.26M Buy
41,061
+64
+0.2% +$5.01K 0.01% 1068
2013
Q4 		$3.22M Sell
40,997
-38
-0.1% -$2.78K 0.01% 1028
2013
Q3 		$2.88M Sell
41,035
-784
-2% -$51.4K 0.01% 1036
2013
Q2 		$2.55M Buy
+41,819
New +$2.54M 0.01% 1012

Other funds holding MCO

Berkshire Hathaway
Berkshire Hathaway Omaha, Nebraska $263B AUM 16.68% 1-Year Est. Return
TCI Fund Management
TCI Fund Management London, United Kingdom $45.2B AUM 12.74% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Fiera Capital (Canada)
Fiera Capital (Canada) Montreal, Quebec, Canada $27.6B AUM 23.56% 1-Year Est. Return
PAM
PineStone Asset Management Montreal, Quebec, Canada $16.2B AUM 25.74% 1-Year Est. Return

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

William Blair & Company increased its Moody's (MCO) stake by 164% in Q1 2026, buying an estimated $19.7M and bringing the position to 66,954 shares worth $29.2M. The position accounts for 0.08% of the portfolio, ranked #197.

William Blair & Company first reported a position in MCO in Q2 2013 and has held it in 52 quarters since. The position peaked at $219M in Q2 2015. 1,378 funds tracked by Wall St. Rank hold MCO as of Q1 2026.

  • William Blair & Company held 66,954 shares of Moody's worth $29.2M as of Q1 2026.
  • William Blair & Company bought 41,600 Moody's shares in Q1 2026, an estimated $19.7M.
  • Moody's made up 0.08% of William Blair & Company's portfolio in Q1 2026, its #197 holding.
  • William Blair & Company first reported a position in Moody's in Q2 2013 and has held it in 52 quarters since.
  • William Blair & Company's Moody's position peaked at $219M in Q2 2015.
  • 1,378 funds tracked by Wall St. Rank held Moody's as of Q1 2026.

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