Hengistbury Investment Partners LLP: INTERACTIVE BROKERS GROUP IN (IBKR): Quarterly 13F Position History
As of Q1 2026, Hengistbury Investment Partners LLP reported 1,050,834 shares of INTERACTIVE BROKERS GROUP IN (IBKR), worth $70.5M and representing 29.4% of its 13F equity book. Quarter-over-quarter share count change: 85,250 (-7.5%) . The position first appeared in Q2 2024 and has been disclosed across 8 13F-HR filings in Pactolio's tracked window.
- 1,050,834Shares Held (Latest Filing)
- $70.5MReported Market Value (Latest Filing)
- 29.4%Portfolio Weight (% of 13F Equity Book)
- 85,250Quarter-over-Quarter Share Change
- -$2.6MQuarter-over-Quarter Value Change
- 1,136,084Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 8 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 1,050,834 | 85,250 | -7.5% | $70.5M | 29.4% | $67.1 |
| Q4 2025 | 1,136,084 | 0 | — | $73.1M | 32.8% | $64.3 |
| Q3 2025 | 1,136,084 | 0 | — | $78.2M | 49.5% | $68.8 |
| Q2 2025 | 1,136,084 | +891,587 | +364.7% | $63.0M | 43.0% | $55.4 |
| Q1 2025 | 244,497 | 1,420 | -0.6% | $40.5M | 23.4% | $165.6 |
| Q4 2024 | 245,917 | 72,179 | -22.7% | $43.4M | 31.7% | $176.7 |
| Q3 2024 | 318,096 | +199,096 | +167.3% | $44.3M | 18.2% | $139.4 |
| Q2 2024 | 119,000 | — | — | $14.6M | 6.1% | $122.6 |
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 Hengistbury Investment Partners LLP first disclose a IBKR position in 13F-HR filings?
Hengistbury Investment Partners LLP first reported INTERACTIVE BROKERS GROUP IN (IBKR) on its 13F-HR filing for the period ending 2024-06-30 (Q2 2024). The position has appeared on 8 reported quarters within Pactolio's tracked window.
What was Hengistbury Investment Partners LLP's most recent quarter-over-quarter share-count change in IBKR?
Between Q4 2025 and Q1 2026, Hengistbury Investment Partners LLP reduced its IBKR position by 85,250 shares (-7.5%), leaving 1,050,834 shares at a market value of $70.5M.
Does the implied price-per-share represent Hengistbury Investment Partners LLP's cost basis in IBKR?
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.