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TRANSOCEAN LTD

RIG

TRANSOCEAN LTD

TRANSOCEAN LTD historical holders

total: 9

Muhlenkamp & Co TRANSOCEAN LTD transactions over time

Total transactions:
10
New positions:
1
Sold out:
1
Added:
8
Held since:
2023 Q2
Held for:
9 quarters
Latest activity:
2025 Q3
Ronald Muhlenkamp has been an institutional investor in TRANSOCEAN LTD (RIG) since 2023 Q2. According to 2026 Q1 report, Ronald Muhlenkamp doesn't hold any shares. The fund/company first acquired RIG in 2023 Q2, initially purchasing 855,992 shares. Since the initial investment, Muhlenkamp & Co has made 9 more transactions in this position.

When did Ronald Muhlenkamp exit their RIG position?

Ronald Muhlenkamp no longer holds TRANSOCEAN LTD (RIG). They sold off their entire position in 2025 Q3, closing out an investment that began in 2023 Q2.

When did Ronald Muhlenkamp first invest in RIG?

Ronald Muhlenkamp first invested in TRANSOCEAN LTD (RIG) in 2023 Q2 at the reported quarter-end price of $7.01 per share, acquiring 855,992 shares in their initial purchase.

What is Ronald Muhlenkamp's average cost basis for RIG?

Based on historical transaction data, Ronald Muhlenkamp's estimated cost basis for TRANSOCEAN LTD (RIG) is approximately $6.92 per share. This represents their average reported price* across all buy transactions.

Estimated cost basis*

Weighted AVG buy price:
$6.92
Weighted AVG sell price:
$2.59

RIG transactions history by Muhlenkamp & Co

10 results
Period % of
portfolio
Shares
held after*
Reported
price*
Value* % (shares)
of activity
% change
to portfolio
2025 Q3
0.00%
0
$2.59
-100% (-1,058,760)
-0.86%
2025 Q2
0.86%
1,058,760
$2.59
$2,742,187
+3.33% (+34,122)
+0.03%
2025 Q1
1.06%
1,024,638
$3.17
$3,248,101
+0.00% (+37)
+0%
2024 Q4
1.17%
1,024,601
$3.75
$3,842,252
+0.75% (+7,636)
+0.01%
2024 Q3
1.32%
1,016,965
$4.25
$4,322,099
+0.27% (+2,696)
+0%
2024 Q2
1.69%
1,014,269
$5.35
$5,426,339
+0.37% (+3,771)
+0.01%
2024 Q1
1.84%
1,010,498
$6.28
$6,345,927
+3.45% (+33,740)
+0.06%
2023 Q4
2.03%
976,758
$6.35
$6,202,413
+1.67% (+16,081)
+0.03%
2023 Q3
2.72%
960,677
$8.21
$7,887,158
+12.23% (+104,685)
+0.3%
2023 Q2
2.13%
855,992
$7.01
$6,000,504
new
+2.13%
* Shares, change to shares, sold shares, shares held after: split-adjusted.
* Reported price: this doesn't represent the actual buy or sell price. It is the split-adjusted price of the security as of the last day of the reported period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
* Estimated cost basis: based on "Reported price*" (not earlier than 2013 Q2). Calculation starts from the latest "new buy" activity to the latest "close out" activity (if any).
* Value or Price: If the security is completely sold out, we show the reported value (or price) prior to the actual period.
* New buy or own: this means there is no earlier reporting (for us or in general). So we can't know if the actual purchase of the security happened at the reported period or earlier.