Skip to main content

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

Position in IBKR — Interactive Brokers Group, Inc.

CIK 912938 Boston, MA

Position in IBKR

as of Jun 30, 2026 · filed Aug 3, 2026
Position Value
$33,155,449
+$8,603,404 QoQ
Shares Held
380,922
+4.1% QoQ
Ownership
0.084%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#124
of 1,105 holders
Holding Since
Dec 2024
7 quarters on record
Voting authority Sole 62% Shared 0% None 38%

Common Shares in IBKR Over Time

Shares Held

Position Value (USD)

Position in Capital Markets

Financial Services · as of Jun 30, 2026

MASSACHUSETTS FINANCIAL SERVICES CO /MA/ holds $4,901,890,860 across 13 Capital Markets names. IBKR ranks #9 (0.7% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in IBKR

Export CSV
7 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $33,155,449 380,922
2026-03-31 $24,552,045 366,066
2025-12-31 $31,495,692 489,748
2025-09-30 $3,975,703 57,778
2025-06-30 $3,218,876 58,092
2025-03-31 $2,392,940 14,451
2024-12-31 $1,219,199 6,901