Islander Capital Partners, L.P. — ROBLOX CORP RBLX: Quarterly 13F Position History
Islander Capital Partners, L.P. has reported ROBLOX CORP (RBLX) on 2 13F-HR filings in Pactolio's tracked window, first appearing in Q4 2025. As of Q1 2026, the position is sized at 458,000 shares ($25.9M market value, 10.21% of the equity book). Quarter-over-quarter share count change: + 210,142 (+84.8%) .
- 458,000Shares Held (Latest Filing)
- $25.9MReported Market Value (Latest Filing)
- 10.21%Portfolio Weight (% of 13F Equity Book)
- +210,142Quarter-over-Quarter Share Change
- +$5.8MQuarter-over-Quarter Value Change
- 458,000Peak Reported Shares (Historical)
Recent initiation: Islander Capital Partners, L.P. first reported RBLX on the Q4 2025 filing — fewer than three quarters of history are available.
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 2 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 458,000 | +210,142 | +84.8% | $25.9M | 10.21% | $56.56 |
| Q4 2025 | 247,858 | — | — | $20.1M | 9.05% | $81.03 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Islander Capital Partners, L.P. first disclose a RBLX position in 13F-HR filings?
Islander Capital Partners, L.P. first reported ROBLOX CORP (RBLX) on its 13F-HR filing for the period ending 2025-12-31 (Q4 2025). The position has appeared on 2 reported quarters within Pactolio's tracked window.
What was Islander Capital Partners, L.P.'s most recent quarter-over-quarter share-count change in RBLX?
Between Q4 2025 and Q1 2026, Islander Capital Partners, L.P. added 210,142 shares of RBLX (+84.8%), bringing the total reported position to 458,000 shares at a market value of $25.9M.
Does the implied price-per-share represent Islander Capital Partners, L.P.'s cost basis in RBLX?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.