Safety Insurance Group, Inc.
DE ˙ DB ˙ US78648T1007
58,50 € ↑0,50 (0,86%)
2026-06-05
DEL PRIS
SecurityDE:SFN / Safety Insurance Group, Inc.
InstitutionJane Street Group, Llc
Latest Disclosed Ownership28,622 shares
Latest Disclosed Value $ 2,079,102
Jane Street Group, Llc reports 32.88% increase in ownership of SFN / Safety Insurance Group, Inc.

On May 12, 2026 - Jane Street Group, Llc filed a 13F-HR form disclosing ownership of 28,622 shares of Safety Insurance Group, Inc. (DE:SFN) valued at $1,774,564 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 21,539 shares of Safety Insurance Group, Inc.. This represents a change in shares of 32.88% during the quarter. The current value of the position is $1,674,387 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F SAFETY INS GROUP COM 78648T100 28,622 7,083 32.88 2,079 23.90 0.0003
2026-02-12 2025-12-31 13F SAFETY INS GROUP COM 78648T100 21,539 -24,563 -53.28 1,678 -48.50 0.0003
2025-11-14 2025-09-30 13F SAFETY INS GROUP COM 78648T100 46,102 17,057 58.73 3,259 41.34 0.0005
2025-08-14 2025-06-30 13F SAFETY INS GROUP COM 78648T100 29,045 -5,401 -15.68 2,306 -15.16 0.0005
2025-05-19 2025-03-31 13F/A-1 SAFETY INS GROUP COM 78648T100 34,446 34,446 2,717 0.0007
2025-05-14 2025-03-31 13F SAFETY INS GROUP COM 78648T100 34,446 34,446 2,717 0.0006
2025-02-14 2024-12-31 13F SAFETY INS GROUP COM 78648T100 0 -26,641 -100.00 0 -100.00
2024-11-15 2024-09-30 13F SAFETY INS GROUP COM 78648T100 26,641 9,713 57.38 2,179 71.50 0.0005
2024-08-15 2024-06-30 13F SAFETY INS GROUP COM 78648T100 16,928 12,658 296.44 1,270 262.86 0.0003
2024-05-16 2024-03-31 13F SAFETY INS GROUP COM 78648T100 4,270 -995 -18.90 351 -12.50 0.0001
2024-02-15 2023-12-31 13F SAFETY INS GROUP COM 78648T100 5,265 -1,686 -24.26 400 -15.43 0.0001
2023-11-15 2023-09-30 13F SAFETY INS GROUP COM 78648T100 6,951 928 15.41 474 9.74 0.0002
2023-08-14 2023-06-30 13F SAFETY INS GROUP COM 78648T100 6,023 -7,208 -54.48 432 -56.24 0.0001
2023-05-16 2023-03-31 13F SAFETY INS GROUP COM 78648T100 13,231 10,703 423.38 986 362.44 0.0004
2023-02-15 2022-12-31 13F SAFETY INS GROUP COM 78648T100 2,528 2,528 213 0.0001
2022-11-14 2022-09-30 13F SAFETY INS GROUP COM 78648T100 0 -5,779 -100.00 0 -100.00
2022-08-16 2022-06-30 13F SAFETY INS GROUP COM 78648T100 5,779 5,779 561 0.0002
2021-08-16 2021-06-30 13F SAFETY INS GROUP COM 78648T100 0 -5,115 -100.00 0 -100.00
2021-05-18 2021-03-31 13F SAFETY INS GROUP COM 78648T100 5,115 5,115 431 0.0002
2021-02-17 2020-12-31 13F SAFETY INS GROUP COM 78648T100 0 -3,426 -100.00 0 -100.00
2020-11-17 2020-09-30 13F SAFETY INS GROUP COM 78648T100 3,426 -2,194 -39.04 236 -44.86 0.0001
2020-08-17 2020-06-30 13F SAFETY INS GROUP COM 78648T100 5,620 5,620 428 0.0003
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.