Paul Isaac
Arbiter Partners Capital Management
Arbiter Partners Capital Management Portfolio 13F
Paul Isaac Holdings Activity
- Portfolio value:
- $147.43M≈ (-$38M≈)
- Previous value:
- $185.82M≈
- # of changes:
- 27
- New positions:
- 3
- Reported for:
- 31 Mar 2026 (Q1)
- Latest filing date:
- 12 May 2026
Arbiter Partners Capital Management has disclosed a total of 27 changes to the portfolio in the latest (2026 Q1) SEC report(s): increased the number of shares of 7, bought 3 totally new, decreased the number of shares of 10 and completely sold out 7 position(s).
What stocks is Paul Isaac buying now?
In the recent quarter Paul Isaac has bought 10 securities out of which top 5 purchases (by % change to portfolio) are (ODV) Osisko Development Corp (added shares +122.58%), (NAVI) Navient Corp (added shares +230.48%), (TBN) Tamboran Resources Corp (added shares +17.48%), (ELE) Elemental Royalty Corp (added shares +522.64%) and (RNA) ATRIUM THERAPEUTICS INC (new buy).
27 results
| History | Ticker | Name |
% or activity |
Shares change |
Shares held after* |
% change to portfolio |
Reported price* |
% difference current price* |
% of portfolio |
Held since* | Held for* |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
ATRIUM THERAPEUTICS INC
|
new
|
+230,000
|
230,000
|
+2.09%
|
$13.37
|
-15.03%($11.36)
|
2.09%
|
2026 Q1
|
≈ 0.25 years
|
|
|
|
BURFORD CAPITAL LTD
|
new
|
+27,000
|
27,000
|
+0.08%
|
$4.52
|
-10.07%($4.06)
|
0.08%
|
2026 Q1
|
≈ 0.25 years
|
|
|
|
Microsoft Corp
|
new
|
+2,000
|
2,000
|
+0.5%
|
$370.17
|
+24.58%($461.18)
|
0.50%
|
2026 Q1
|
≈ 0.25 years
|
|
|
|
Elemental Royalty Corp
|
+522.64%
|
+141,284
|
168,317
|
+1.81%
|
$18.84
|
-17.20%($15.60)
|
2.15%
|
2025 Q4
|
≈ 0.50 years
|
|
|
|
Navient Corp
|
+230.48%
|
+357,454
|
512,548
|
+1.98%
|
$8.18
|
+2.51%($8.38)
|
2.84%
|
2025 Q3
|
≈ 0.75 years
|
|
|
|
Osisko Development Corp
|
+122.58%
|
+1,149,642
|
2,087,496
|
+2.53%
|
$3.25
|
-28.92%($2.31)
|
4.60%
|
2025 Q1
|
≈ 1.25 years
|
|
|
|
Oportun Financial Corp
|
+36.14%
|
+50,997
|
192,106
|
+0.16%
|
$4.61
|
+19.09%($5.49)
|
0.60%
|
2025 Q4
|
≈ 0.50 years
|
|
|
|
Marti Technologies Inc
|
+24.49%
|
+56,319
|
286,254
|
+0.08%
|
$2.00
|
-9.50%($1.81)
|
0.39%
|
2024 Q4
|
≈ 1.50 years
|
|
|
|
MGIC Investment Corp
|
+17.57%
|
+13,000
|
87,000
|
+0.23%
|
$26.25
|
+13.94%($29.91)
|
1.55%
|
2022 Q3
|
≈ 3.75 years
|
|
|
|
Tamboran Resources Corp
|
+17.48%
|
+10,000
|
67,212
|
+0.34%
|
$49.99
|
-34.38%($32.80)
|
2.28%
|
2025 Q3
|
≈ 0.75 years
|
|
* 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.
* Current price: this can be a delayed price and may not reflect the real-time market value, however it is too close.
* Value or Price: If the security is completely sold out, we show the reported value (or price) prior to the actual period.
* Held since / Held for: calculated since the latest "new buy" position. If the security was previously exited and re-entered, only the most recent holding period is counted.