Citadel Investment Advisory, Inc. — 13F holdings

Citadel Investment Advisory, Inc. reported 76 holdings worth $218M in its 13F filing for Q3 2026, filed October 15, 2026.

Largest positions

1. BRK.B BERKSHIRE HATHAWAY INC DEL — $52.0M (23.8%)
2. MKL MARKEL GROUP INC — $26.4M (12.1%)
3. GOOGL ALPHABET INC — $15.8M (7.2%)
4. IPMLF Imperial Metals Corp — $10.2M (4.7%)
5. GOOG ALPHABET INC — $9.30M (4.3%)
6. MSFT MICROSOFT CORP — $7.58M (3.5%)
7. PM PHILIP MORRIS INTL INC — $7.53M (3.5%)
8. JNJ JOHNSON & JOHNSON — $6.09M (2.8%)
9. RTX RTX CORPORATION — $5.16M (2.4%)
10. ABBV ABBVIE INC — $4.65M (2.1%)