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Interactive Brokers Group Inc

IBKR

Interactive Brokers Group Inc

Interactive Brokers Group Inc historical holders

total: 11

RV Capital Interactive Brokers Group Inc transactions over time

Total transactions:
9
New positions:
1
Added:
4
Reduced:
4
Held since:
2023 Q1
Held for:
13 quarters
Latest activity:
2026 Q1
Rob Vinall has been an institutional investor in Interactive Brokers Group Inc (IBKR) since 2023 Q1. According to 2026 Q1 report, Rob Vinall holds 757,919 shares with a market value of roughly $51.11M representing 13.36% of their equity portfolio. The fund/company first acquired IBKR in 2023 Q1, initially purchasing 814,988 shares. Since the initial investment, RV Capital has made 8 more transactions in this position.

Does Rob Vinall still hold IBKR?

Yes, Rob Vinall continues to hold Interactive Brokers Group Inc (IBKR). According to their 2026 Q1 report, they maintain a position of 757,919 shares valued at approximately $51.11M, representing 13.36% of their equity portfolio.

When did Rob Vinall first invest in IBKR?

Rob Vinall first invested in Interactive Brokers Group Inc (IBKR) in 2023 Q1 at the reported quarter-end price of $20.64 per share, acquiring 814,988 shares in their initial purchase.

What is Rob Vinall's average cost basis for IBKR?

Based on historical transaction data, Rob Vinall's estimated cost basis for Interactive Brokers Group Inc (IBKR) is approximately $21.13 per share. This represents their average reported price* across all buy transactions.

Estimated cost basis*

Weighted AVG buy price:
$21.13
Weighted AVG sell price:
$48.62

IBKR transactions history by RV Capital

9 results
Period % of
portfolio
Shares
held after*
Reported
price*
Value* % (shares)
of activity
% change
to portfolio
2026 Q1
13.36%
757,919
$67.44
$51,111,227
+0.72% (+5,441)
+0.1%
2025 Q4
11.27%
752,478
$64.31
$48,391,860
-5.85% (-46,789)
-0.55%
2025 Q3
10.07%
799,267
$68.81
$54,997,562
-5.96% (-50,653)
-0.65%
2025 Q1
7.77%
849,920
$41.40
$35,184,563
-5.29% (-47,468)
-0.42%
2024 Q4
8.60%
897,388
$44.74
$40,146,896
-28.90% (-364,800)
-3.37%
2024 Q3
9.07%
1,262,188
$34.84
$43,974,630
+1.81% (+22,400)
+0.16%
2023 Q4
7.43%
1,239,788
$20.72
$25,694,606
+7.34% (+84,800)
+0.51%
2023 Q2
7.82%
1,154,988
$20.77
$23,986,213
+41.72% (+340,000)
+2.3%
2023 Q1
6.40%
814,988
$20.64
$16,821,352
new
+6.4%
* Shares, change to shares, sold shares, shares held after: split-adjusted.
* Reported price: this doesn't represent the actual buy or sell price. It is the split-adjusted price of the security as of the last day of the reported period.
If the security is completely sold out, we show the reported split-adjusted price prior to the actual period.
* Estimated cost basis: based on "Reported price*" (not earlier than 2013 Q2). Calculation starts from the latest "new buy" activity to the latest "close out" activity (if any).
* Value or Price: If the security is completely sold out, we show the reported value (or price) prior to the actual period.
* New buy or own: this means there is no earlier reporting (for us or in general). So we can't know if the actual purchase of the security happened at the reported period or earlier.