Ticker · CUSIP 46990A102
Holders (tracked)
6
Combined shares
1,906,949
Combined value
$12.13M
Last close
$6.49
Quarter
2025Q4
Price · 1Y$6.49+2.23 (+52.29%)H $7.12 · L $4.11 · Avg Vol 247K
Position opened
Tracked holders · last 8 quarters
+5 vs previous quarter over the last 2.
Price is +2.0% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
7 events
- Two Sigma Investments opened position2026-02-17+266,505 shares · 2025Q4Position
- D.E. Shaw & Co. opened position2026-02-17+427,057 shares · 2025Q4Position
- T. Rowe Price trimmed2026-02-17−263,106 shares · 2025Q4Position
- AQR Capital Management opened position2026-02-17+382,562 shares · 2025Q4Position
- +21,667 shares · 2025Q4Position
- Renaissance Technologies opened position2026-02-12+25,900 shares · 2025Q4Position
- T. Rowe Price opened position2025-11-14+1,046,364 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of JRVR…
Cost basis inferred from each manager's quarter-over-quarter position changes. Sorted by % return on the position they're still holding.
| Investor | First in | Cost basis | Return | Position value today |
|---|---|---|---|---|
| T. Rowe Price | 2025Q3 | $5.55 | +16.9% | $5.1M |
| Ken Griffin (Citadel Advisors) | 2025Q4 | $6.36 | +2.0% | $141K |
| Renaissance Technologies | 2025Q4 | $6.36 | +2.0% | $168K |
| Two Sigma Investments | 2025Q4 | $6.36 | +2.0% | $1.7M |
| D.E. Shaw & Co. | 2025Q4 | $6.36 | +2.0% | $2.8M |
| AQR Capital Management | 2025Q4 | $6.36 | +2.0% | $2.5M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions5
- D.E. Shaw & Co.+427,057$2.7M
- AQR Capital Management+382,562$2.4M
- Two Sigma Investments+266,505$1.7M
- Renaissance Technologies+25,900$165K
- Ken Griffin (Citadel Advisors)+21,667$138K
Added to0
—
Trimmed1
- T. Rowe Price−263,106$2K
Exited0
—
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2025Q3 | 1 | $5.8M |
| 2025Q4 | 6 | $12.1M |
Who owns JRVR
6 super-investors · 2025Q4
Tracked stake
1.91M
shares
Combined value
$12M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New5Trim1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | T. Rowe Price | 783.3K | $5M |
| 2 | D.E. Shaw & Co. | 427.1K | $3M |
| 3 | AQR Capital Management | 382.6K | $2M |
| 4 | Two Sigma Investments | 266.5K | $2M |
| 5 | Renaissance Technologies | 25.9K | $165K |
| 6 | Ken Griffin Citadel Advisors | 21.7K | $138K |
Recent moves
7 transactions
- +266,505 · 2025Q4
- +427,057 · 2025Q4
- TRIMT. Rowe Price−263,106 · 2025Q4
- +382,562 · 2025Q4
- +21,667 · 2025Q4
- +25,900 · 2025Q4
- +1,046,364 · 2025Q3
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