Safety Insurance Group, Inc.
US ˙ NasdaqGS ˙ US78648T1007

SecuritySAFT / Safety Insurance Group, Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership140,400 shares
Latest Disclosed Value $ 10,198,656
Renaissance Technologies Llc reports 0.29% increase in ownership of SAFT / Safety Insurance Group, Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 140,400 shares of Safety Insurance Group, Inc. (US:SAFT) valued at $10,198,656 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 140,000 shares of Safety Insurance Group, Inc.. This represents a change in shares of 0.29% during the quarter. The current value of the position is $9,865,908 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)
2026-05-14 2026-03-31 13F SAFETY INS GROUP COM 78648T100 140,400 400 0.29 10,199 -6.50 0.0160
2026-02-12 2025-12-31 13F SAFETY INS GROUP COM 78648T100 140,000 -33,000 -19.08 10,907 -10.81 0.0169
2025-11-13 2025-09-30 13F SAFETY INS GROUP COM 78648T100 173,000 28,393 19.63 12,229 6.52 0.0161
2025-08-13 2025-06-30 13F SAFETY INS GROUP COM 78648T100 144,607 1,707 1.19 11,480 1.85 0.0153
2025-05-14 2025-03-31 13F SAFETY INS GROUP COM 78648T100 142,900 6,486 4.75 11,272 0.28 0.0171
2025-02-13 2024-12-31 13F SAFETY INS GROUP COM 78648T100 136,414 -4,700 -3.33 11,241 -2.60 0.0166
2024-11-13 2024-09-30 13F SAFETY INS GROUP COM 78648T100 141,114 -6,900 -4.66 11,540 3.92 0.0174
2024-08-09 2024-06-30 13F SAFETY INS GROUP COM 78648T100 148,014 -7,000 -4.52 11,105 92,441.67 0.0188
2024-05-13 2024-03-31 13F SAFETY INS GROUP COM 78648T100 155,014 -15,286 -8.98 13 0.00 0.0200
2024-02-13 2023-12-31 13F SAFETY INS GROUP COM 78648T100 170,300 -29,300 -14.68 13 -7.69 0.0200
2023-11-14 2023-09-30 13F SAFETY INS GROUP COM 78648T100 199,600 9,100 4.78 14 0.00 0.0232
2023-08-11 2023-06-30 13F SAFETY INS GROUP COM 78648T100 190,500 29,700 18.47 14 18.18 0.0197
2023-05-12 2023-03-31 13F SAFETY INS GROUP COM 78648T100 160,800 6,686 4.34 12 -8.33 0.0159
2023-02-13 2022-12-31 13F SAFETY INS GROUP COM 78648T100 154,114 -7,500 -4.64 13 -99.91 0.0178
2022-11-14 2022-09-30 13F SAFETY INS GROUP COM 78648T100 161,614 -18,800 -10.42 13,181 -24.76 0.0186
2022-08-12 2022-06-30 13F SAFETY INS GROUP COM 78648T100 180,414 -13,886 -7.15 17,518 -0.76 0.0207
2022-05-13 2022-03-31 13F SAFETY INS GROUP COM 78648T100 194,300 12,900 7.11 17,652 14.45 0.0207
2022-02-11 2021-12-31 13F SAFETY INS GROUP COM 78648T100 181,400 -5,000 -2.68 15,424 4.41 0.0192
2021-11-12 2021-09-30 13F SAFETY INS GROUP COM 78648T100 186,400 -38,300 -17.04 14,772 -16.02 0.0191
2021-08-13 2021-06-30 13F SAFETY INS GROUP COM 78648T100 224,700 -5,800 -2.52 17,590 -9.42 0.0220
2021-05-13 2021-03-31 13F SAFETY INS GROUP COM 78648T100 230,500 -45,700 -16.55 19,420 -9.74 0.0242
2021-02-10 2020-12-31 13F SAFETY INS GROUP COM 78648T100 276,200 -78,600 -22.15 21,516 -12.23 0.0234
2020-11-13 2020-09-30 13F SAFETY INS GROUP COM 78648T100 354,800 9,900 2.87 24,513 -6.80 0.0245
2020-08-13 2020-06-30 13F SAFETY INS GROUP COM 78648T100 344,900 5,300 1.56 26,302 -8.27 0.0227
2020-05-14 2020-03-31 13F SAFETY INS GROUP COM 78648T100 339,600 17,500 5.43 28,672 -3.80 0.0278
2020-02-13 2019-12-31 13F SAFETY INS GROUP COM 78648T100 322,100 -14,100 -4.19 29,804 -12.51 0.0229
2019-11-13 2019-09-30 13F SAFETY INS GROUP COM 78648T100 336,200 -39,986 -10.63 34,067 -4.81 0.0288
2019-08-12 2019-06-30 13F SAFETY INS GROUP COM 78648T100 376,186 -19,814 -5.00 35,787 3.71 0.0315
2019-05-14 2019-03-31 13F SAFETY INS GROUP COM 78648T100 396,000 1,700 0.43 34,507 6.97 0.0314
2019-02-12 2018-12-31 13F SAFETY INS GROUP COM 78648T100 394,300 8,100 2.10 32,258 -6.78 0.0353
2018-11-13 2018-09-30 13F SAFETY INS GROUP COM 78648T100 386,200 -3,900 -1.00 34,604 3.87 0.0356
2018-08-13 2018-06-30 13F/A-1 SAFETY INS GROUP COM 78648T100 390,100 9,700 2.55 33,315 13.96 0.0363
2018-08-13 2018-06-30 13F SAFETY INS GROUP COM 78648T100 380,400 29,234
2018-05-14 2018-03-31 13F SAFETY INS GROUP COM 78648T100 380,400 15,500 4.25 29,234 -0.35 0.0320
2018-02-13 2017-12-31 13F SAFETY INS GROUP COM 78648T100 364,900 -5,700 -1.54 29,338 3.75 0.0323
2017-11-13 2017-09-30 13F SAFETY INS GROUP COM 78648T100 370,600 26,914 7.83 28,277 20.46 0.0333
2017-08-11 2017-06-30 13F SAFETY INS GROUP COM 78648T100 343,686 32,700 10.51 23,474 7.68 0.0300
2017-05-12 2017-03-31 13F SAFETY INS GROUP COM 78648T100 310,986 95,800 44.52 21,800 37.46 0.0305
2017-02-13 2016-12-31 13F SAFETY INS GROUP COM 78648T100 215,186 46,886 27.86 15,859 40.18 0.0251
2016-11-14 2016-09-30 13F SAFETY INS GROUP COM 78648T100 168,300 5,914 3.64 11,313 13.13 0.0200
2016-08-12 2016-06-30 13F SAFETY INS GROUP COM 78648T100 162,386 -5,300 -3.16 10,000 4.52 0.0190
2016-05-13 2016-03-31 13F SAFETY INS GROUP COM 78648T100 167,686 19,986 13.53 9,568 14.90 0.0182
2016-02-11 2015-12-31 13F SAFETY INS GROUP COM 78648T100 147,700 17,800 13.70 8,327 18.38 0.0181
2015-11-12 2015-09-30 13F SAFETY INS GROUP COM 78648T100 129,900 44,800 52.64 7,034 43.23 0.0168
2015-08-14 2015-06-30 13F SAFETY INS GROUP COM 78648T100 85,100 22,943 36.91 4,911 32.23 0.0112
2015-05-13 2015-03-31 13F SAFETY INS GROUP COM 78648T100 62,157 23,229 59.67 3,714 49.04 0.0079
2015-02-13 2014-12-31 13F SAFETY INS GROUP COM 78648T100 38,928 13,142 50.97 2,492 79.28 0.0060
2014-11-12 2014-09-30 13F SAFETY INS GROUP COM 78648T100 25,786 19,186 290.70 1,390 310.03 0.0038
2014-08-13 2014-06-30 13F SAFETY INS GROUP COM 78648T100 6,600 6,600 339 0.0008
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.