Starboard Value LP: RIOT PLATFORMS INC (RIOT): Quarterly 13F Position History
As of Q2 2026, Starboard Value LP reported 10,114,576 shares of RIOT PLATFORMS INC (RIOT), worth $276.9M and representing 6.1% of its 13F equity book. Quarter-over-quarter share count change: 5,430,000 (-34.9%) . The position first appeared in Q4 2024 and has been disclosed across 7 13F-HR filings in Pactolio's tracked window.
- 10,114,576Shares Held (Latest Filing)
- $276.9MReported Market Value (Latest Filing)
- 6.1%Portfolio Weight (% of 13F Equity Book)
- 5,430,000Quarter-over-Quarter Share Change
- +$84.8MQuarter-over-Quarter Value Change
- 15,544,576Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 7 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q2 2026 | 10,114,576 | 5,430,000 | -34.9% | $276.9M | 6.1% | $27.4 |
| Q1 2026 | 15,544,576 | +2,800,000 | +22.0% | $192.1M | 4.2% | $12.4 |
| Q4 2025 | 12,744,576 | +3,926,576 | +44.5% | $161.5M | 3.1% | $12.7 |
| Q3 2025 | 8,818,000 | +4,141,100 | +88.5% | $167.8M | 3.2% | $19.0 |
| Q2 2025 | 4,676,900 | 8,023,100 | -63.2% | $52.8M | 0.9% | $11.3 |
| Q1 2025 | 12,700,000 | 4,035 | -0.0% | $90.4M | 1.6% | $7.1 |
| Q4 2024 | 12,704,035 | – | – | $129.7M | 2.3% | $10.2 |
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 rather than the manager's cost basis. See the full methodology document for the normalization rules.
When did Starboard Value LP first disclose a RIOT position in 13F-HR filings?
Starboard Value LP first reported RIOT PLATFORMS INC (RIOT) on its 13F-HR filing for the period ending 2024-12-31 (Q4 2024). The position has appeared on 7 reported quarters within Pactolio's tracked window.
What was Starboard Value LP's most recent quarter-over-quarter share-count change in RIOT?
Between Q1 2026 and Q2 2026, Starboard Value LP reduced its RIOT position by 5,430,000 shares (-34.9%), leaving 10,114,576 shares at a market value of $276.9M.
Does the implied price-per-share represent Starboard Value LP's cost basis in RIOT?
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.