William Blair & Company
RIG icon

William Blair & Company’s Transocean RIG Stock Holding History

William Blair & Company’s Portfolio RIG Stock Details RIG Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$2.25M Buy
338,803
+21,689
+7% +$122K 0.01% 699
2025
Q4 		$1.31M Sell
317,114
-1,184
-0.4% -$4.6K ﹤0.01% 865
2025
Q3 		$993K Buy
318,298
+22,460
+8% +$67.8K ﹤0.01% 923
2025
Q2 		$766K Buy
295,838
+13,199
+5% +$34K ﹤0.01% 970
2025
Q1 		$896K Buy
282,639
+2,909
+1% +$10.2K ﹤0.01% 915
2024
Q4 		$1.05M Buy
279,730
+534
+0.2% +$2.22K ﹤0.01% 889
2024
Q3 		$1.19M Buy
279,196
+9,500
+4% +$46.8K ﹤0.01% 856
2024
Q2 		$1.44M Buy
269,696
+9,704
+4% +$56.1K ﹤0.01% 773
2024
Q1 		$1.63M Sell
259,992
-414
-0.2% -$2.26K 0.01% 729
2023
Q4 		$1.65M Sell
260,406
-8,730
-3% -$58.4K 0.01% 719
2023
Q3 		$2.21M Sell
269,136
-5
-0% -$41 0.01% 629
2023
Q2 		$1.89M Buy
269,141
+4,215
+2% +$26.1K 0.01% 679
2023
Q1 		$1.68M Sell
264,926
-5,060
-2% -$32.5K 0.01% 696
2022
Q4 		$1.23M Buy
269,986
+74,160
+38% +$286K 0.01% 765
2022
Q3 		$484K Buy
195,826
+26,500
+16% +$84.8K ﹤0.01% 1049
2022
Q2 		$564K Sell
169,326
-1,600
-0.9% -$6.48K ﹤0.01% 1022
2022
Q1 		$781K Sell
170,926
-37,775
-18% -$144K ﹤0.01% 1007
2021
Q4 		$576K Buy
208,701
+7,170
+4% +$24.3K ﹤0.01% 1160
2021
Q3 		$764K Buy
201,531
+97,280
+93% +$354K ﹤0.01% 1023
2021
Q2 		$471K Buy
104,251
+10,750
+11% +$40.8K ﹤0.01% 1162
2021
Q1 		$332K Buy
93,501
+7,500
+9% +$26.1K ﹤0.01% 1293
2020
Q4 		$199K Buy
86,001
+1,875
+2% +$2.76K ﹤0.01% 1438
2020
Q3 		$68K Sell
84,126
-134
-0.2% -$219 ﹤0.01% 1473
2020
Q2 		$154K Sell
84,260
-633
-0.7% -$983 ﹤0.01% 1303
2020
Q1 		$98K Sell
84,893
-9,545
-10% -$37.2K ﹤0.01% 1311
2019
Q4 		$650K Buy
94,438
+3,845
+4% +$19.8K ﹤0.01% 906
2019
Q3 		$405K Buy
90,593
+2,700
+3% +$14.3K ﹤0.01% 1015
2019
Q2 		$785K Buy
87,893
+1,800
+2% +$13.4K ﹤0.01% 831
2019
Q1 		$750K Buy
86,093
+6,491
+8% +$55.6K ﹤0.01% 823
2018
Q4 		$552K Buy
79,602
+6,729
+9% +$68.6K ﹤0.01% 872
2018
Q3 		$1.02M Buy
72,873
+2,630
+4% +$32.7K 0.01% 736
2018
Q2 		$944K Sell
70,243
-2,520
-3% -$31K 0.01% 745
2018
Q1 		$720K Buy
72,763
+23,498
+48% +$242K 0.01% 799
2017
Q4 		$526K Buy
49,265
+3,190
+7% +$33.1K ﹤0.01% 953
2017
Q3 		$496K Buy
46,075
+4,891
+12% +$42.1K ﹤0.01% 938
2017
Q2 		$339K Buy
41,184
+7,395
+22% +$75.5K ﹤0.01% 1132
2017
Q1 		$467K Sell
33,789
-2,921
-8% -$40.1K ﹤0.01% 921
2016
Q4 		$541K Sell
36,710
-228
-0.6% -$2.7K ﹤0.01% 810
2016
Q3 		$394K Sell
36,938
-2,897
-7% -$30.6K ﹤0.01% 915
2016
Q2 		$474K Sell
39,835
-1,461
-4% -$14.9K ﹤0.01% 828
2016
Q1 		$377K Buy
41,296
+2,125
+5% +$21.1K ﹤0.01% 872
2015
Q4 		$484K Buy
39,171
+5,605
+17% +$80.8K ﹤0.01% 813
2015
Q3 		$434K Buy
33,566
+1,925
+6% +$26.7K ﹤0.01% 1026
2015
Q2 		$510K Sell
31,641
-1,000
-3% -$18K ﹤0.01% 1751
2015
Q1 		$479K Sell
32,641
-24,700
-43% -$400K ﹤0.01% 1727
2014
Q4 		$1.05M Buy
57,341
+36,117
+170% +$902K ﹤0.01% 1487
2014
Q3 		$678K Buy
21,224
+7,115
+50% +$278K ﹤0.01% 1598
2014
Q2 		$634K Buy
14,109
+3,075
+28% +$131K ﹤0.01% 1594
2014
Q1 		$456K Buy
11,034
+4,846
+78% +$211K ﹤0.01% 1644
2013
Q4 		$305K Buy
6,188
+1,177
+23% +$57.6K ﹤0.01% 1736
2013
Q3 		$222K Sell
5,011
-1,089
-18% -$51.5K ﹤0.01% 1847
2013
Q2 		$292K Buy
+6,100
New +$311K ﹤0.01% 1681

Other funds holding RIG

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Two Sigma Investments
Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
SPC
Slate Path Capital New York $6.73B AUM 95.97% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
PGA
Pilgrim Global Advisors Reno, Nevada $772M AUM 51.79% 1-Year Est. Return

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

William Blair & Company increased its Transocean (RIG) stake by 6.8% in Q1 2026, buying an estimated $122K and bringing the position to 338,803 shares worth $2.25M. The position accounts for 0.01% of the portfolio, ranked #699.

William Blair & Company first reported a position in RIG in Q2 2013 and has held it in 52 quarters since. 537 funds tracked by Wall St. Rank hold RIG as of Q1 2026.

  • William Blair & Company held 338,803 shares of Transocean worth $2.25M as of Q1 2026.
  • William Blair & Company bought 21,689 Transocean shares in Q1 2026, an estimated $122K.
  • Transocean made up 0.01% of William Blair & Company's portfolio in Q1 2026, its #699 holding.
  • William Blair & Company first reported a position in Transocean in Q2 2013 and has held it in 52 quarters since.
  • 537 funds tracked by Wall St. Rank held Transocean as of Q1 2026.

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