Institutional Manager · CIK 0002044671
Hingham Institution for Savings
HINGHAM, MA · File #028-26019
Latest AUM
$121.9M
Positions
11
Top-10 Concentration
98.9%
Filings
2
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| NEW | ALPHABET INC | GOOG | +148,950 | +$46.6M | $0 |
| NEW | BERKSHIRE HATHAWAY INC DEL | BRK-A | +41,450 | +$20.8M | $0 |
| NEW | VISA INC | V | +59,150 | +$20.7M | $0 |
| NEW | CHAIN BRIDGE BANCORP INC | CBNA | +293,565 | +$10.2M | $0 |
| NEW | MASTERCARD INCORPORATED | MA | +16,900 | +$9.6M | $0 |
| NEW | S&P GLOBAL INC | SPGI | +9,500 | +$5.0M | $0 |
| NEW | HEICO CORP NEW | HEI-A | +11,000 | +$2.8M | $0 |
| NEW | RLI CORP | RLI | +30,000 | +$1.9M | $0 |
| NEW | BERKSHIRE HATHAWAY INC DEL | BRK-A | +2 | +$1.5M | $0 |
| NEW | PROGRESSIVE CORP | 743315103 | +6,500 | +$1.5M | $0 |
Sector Allocation
Filing History
- 13F HOLDINGS REPORT (Amended)Q/E Dec 202512 pos · $122.0M
- 13F HOLDINGS REPORTQ/E Dec 202511 pos · $121.9M
Top 12 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | ALPHABET INC | GOOG | 148,950 | $46.6M | 38.20% |
| 2 | BERKSHIRE HATHAWAY INC DEL | BRK-A | 41,450 | $20.8M | 17.07% |
| 3 | VISA INC | V | 59,150 | $20.7M | 17.00% |
| 4 | CHAIN BRIDGE BANCORP INC | CBNA | 293,565 | $10.2M | 8.33% |
| 5 | MASTERCARD INCORPORATED | MA | 16,900 | $9.6M | 7.91% |
| 6 | S&P GLOBAL INC | SPGI | 9,500 | $5.0M | 4.07% |
| 7 | HEICO CORP NEW | HEI-A | 11,000 | $2.8M | 2.28% |
| 8 | RLI CORP | RLI | 30,000 | $1.9M | 1.57% |
| 9 | BERKSHIRE HATHAWAY INC DEL | BRK-A | 2 | $1.5M | 1.24% |
| 10 | PROGRESSIVE CORP | 743315103 | 6,500 | $1.5M | 1.21% |
| 11 | MOODYS CORP | MCO | 2,500 | $1.3M | 1.05% |
| 12 | JOHN MARSHALL BANCORP INC | JMSB | 5,000 | $99,950 | 0.08% |