Paul Isaac
Arbiter Partners Capital Management
Paul Isaac GRAIL INC stake
total: 298
Arbiter Partners Capital Management GRAL trades
- Total transactions:
- 8
- New positions:
- 1
- Added:
- 4
- Reduced:
- 3
- Held since:
- 2024 Q2
- Held for:
- 8 quarters
- Latest activity:
- 2026 Q1
According to 2026 Q1 report, Paul Isaac holds 1,034,597 GRAIL INC (GRAL) shares with a market value of roughly $53.47M accounting for 36.27% of the overall portfolio. To date, the estimated cost basis is nearly $18.86 for "buy" trades and estimated average "sell" price is $59.28. Arbiter Partners Capital Management first purchased GRAL in 2024 Q2, initially acquiring 140,000 shares. Since the initial investment in GRAIL INC (GRAL), Arbiter Partners Capital Management has made 7 more transactions.
When did Paul Isaac buy GRAIL INC (GRAL)?
Paul Isaac first invested in GRAIL INC (GRAL) in 2024 Q2 at the reported quarter-end price of $15.37 per share.
What's the cost basis of Arbiter Partners Capital Management's GRAL stake?
The estimated cost basis for GRAIL INC (GRAL) stake is around $18.86 per share. This represents their average reported price* across all buy transactions
Estimated cost basis*
- Weighted AVG buy price:
- $18.86
- Weighted AVG sell price:
- $59.28
Paul Isaac's historical trades in GRAIL INC
8 results
| Period |
% of portfolio |
Shares held after* |
Reported price* |
Value* |
% (shares) of activity |
% change to portfolio |
|---|---|---|---|---|---|---|
|
2026 Q1
|
36.27%
|
1,034,597
|
$51.68
|
$53,467,973
|
-0.10% (-1,000)
|
-0.03%
|
|
2025 Q4
|
47.70%
|
1,035,597
|
$85.59
|
$88,636,747
|
-0.03% (-300)
|
-0.02%
|
|
2025 Q3
|
41.99%
|
1,035,897
|
$59.13
|
$61,252,590
|
-0.19% (-2,001)
|
-0.1%
|
|
2025 Q2
|
47.35%
|
1,037,898
|
$51.42
|
$53,368,715
|
+1.25% (+12,856)
|
+0.59%
|
|
2025 Q1
|
31.86%
|
1,025,042
|
$25.54
|
$26,179,573
|
+23.40% (+194,400)
|
+6.04%
|
|
2024 Q4
|
21.94%
|
830,642
|
$17.85
|
$14,826,959
|
+208.66% (+561,534)
|
+14.83%
|
|
2024 Q3
|
7.31%
|
269,108
|
$13.76
|
$3,702,926
|
+92.22% (+129,108)
|
+3.51%
|
|
2024 Q2
|
4.35%
|
140,000
|
$15.37
|
$2,151,800
|
new
|
+4.35%
|
* 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.
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.