Ticker · CUSIP 14427M107
Holders (tracked)
3
Combined shares
1,429,706
Combined value
$714.9K
Last close
$0.87
Quarter
2025Q4
Price · 1Y$0.87+0.06 (+7.41%)H $1.14 · L $0.39 · Avg Vol 801K
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
Price is +74.0% vs the avg quarter-end implied price across tracked holders.
SEC event timeline
7 events
- Izzy Englander (Millennium Mgmt) exited2026-02-17−34,701 shares · 2025Q4Position
- Two Sigma Investments trimmed2026-02-17−124,706 shares · 2025Q4Position
- Ken Griffin (Citadel Advisors) exited2026-02-17−148,771 shares · 2025Q4Position
- Renaissance Technologies added2026-02-12+35,900 shares · 2025Q4Position
- Izzy Englander (Millennium Mgmt) trimmed2025-11-14−99,380 shares · 2025Q3Position
- Two Sigma Investments trimmed2025-11-14−229,908 shares · 2025Q3Position
- Renaissance Technologies added2025-11-13+124,800 shares · 2025Q3Position
Insider activity
No insider transactions in the last 30 days.
Follow-the-investor returns
If you'd copied each holder of PRTS…
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 |
|---|---|---|---|---|
| Ken Griffin (Citadel Advisors) | 2020Q3 | $0.82 | +6.2% | $51K |
| Two Sigma Investments | 2021Q1 | $1.03 | -15.8% | $16K |
| Renaissance Technologies | 2020Q3 | $2.84 | -69.4% | $1.2M |
Who moved on this name in 2025Q4
Position changes reported for the latest quarter, grouped by direction.
New positions0
—
Added to1
- Renaissance Technologies+35,900$18K
Trimmed1
- Two Sigma Investments−124,706$62K
Exited2
- Ken Griffin (Citadel Advisors)−148,771$106K
- Izzy Englander (Millennium Mgmt)−34,701$25K
Institutional ownership over time
Distinct super-investors holding this ticker · combined dollar value, by quarter.
| Quarter | Holders | Combined value |
|---|---|---|
| 2022Q1 | 11 | $2.92B |
| 2022Q2 | 11 | $39.5M |
| 2022Q3 | 11 | $36.3M |
| 2022Q4 | 11 | $35.6M |
| 2023Q1 | 12 | $33.4M |
| 2023Q2 | 11 | $38.0M |
| 2023Q3 | 11 | $36.7M |
| 2023Q4 | 9 | $27.3M |
| 2024Q1 | 10 | $17.1M |
| 2024Q2 | 10 | $10.9M |
| 2024Q3 | 8 | $4.4M |
| 2024Q4 | 6 | $3.4M |
| 2025Q1 | 6 | $2.1M |
| 2025Q2 | 4 | $1.3M |
| 2025Q3 | 4 | $1.2M |
| 2025Q4 | 3 | $715K |
Who owns PRTS
3 super-investors · 2025Q4
Tracked stake
1.43M
shares
Combined value
$715K
% of shares outstanding
—
shares-out unknown
Quarter action mix
Added1Trim1Sold1
| # | Manager | Shares | Value |
|---|---|---|---|
| 1 | Renaissance Technologies | 1.35M | $676K |
| 2 | Ken Griffin Citadel Advisors | 58.2K | $29K |
| 3 | Two Sigma Investments | 18.8K | $9K |
Recent moves
20 transactions
- −34,701 · 2025Q4
- −124,706 · 2025Q4
- −148,771 · 2025Q4
- +35,900 · 2025Q4
- −99,380 · 2025Q3
- −229,908 · 2025Q3
- +124,800 · 2025Q3
- −112,610 · 2025Q2
- +188,033 · 2025Q2
- SOLDD.E. Shaw & Co.−441,304 · 2025Q2
- +81,300 · 2025Q2
- −204,756 · 2025Q1
- −173,417 · 2025Q1
- TRIMD.E. Shaw & Co.−745,250 · 2025Q1
- +59,800 · 2025Q1
- −74,279 · 2024Q4
- TRIMD.E. Shaw & Co.−663,765 · 2024Q4
- +114,610 · 2024Q4
- −38,132 · 2024Q4
- −540,400 · 2024Q4
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- PRTS insider tradingEvery Form 4 filing by PRTS officers, directors, and 10%+ holders.
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