貝恩資本專業金融公司
US ˙ NYSE ˙ US05684B1070

SecurityBCSF / Bain Capital Specialty Finance, Inc.
InstitutionAdvisory Services Network, LLC
Latest Disclosed Ownership15,426 shares
Latest Disclosed Value $ 191,282
Advisory Services Network, LLC reports 36.19% increase in ownership of BCSF / Bain Capital Specialty Finance, Inc.

On May 15, 2026 - Advisory Services Network, LLC filed a 13F-HR form disclosing ownership of 15,426 shares of Bain Capital Specialty Finance, Inc. (US:BCSF) valued at $191,282 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 11,327 shares of Bain Capital Specialty Finance, Inc.. This represents a change in shares of 36.19% during the quarter. The current value of the position is $204,086 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)
2026-05-15 2026-03-31 13F BAIN CAPITAL SPECIALTY FINANCE CEF 05684B107 15,426 4,099 36.19 191 21.66 0.0018
2026-02-17 2025-12-31 13F BAIN CAPITAL SPECIALTY FINANCE CEF 05684B107 11,327 -1,871 -14.18 158 -16.49 0.0022
2025-11-18 2025-09-30 13F BAIN CAP SPECIALTY FIN CEF 05684B107 13,198 -237 -1.76 188 -6.47 0.0028
2025-08-19 2025-06-30 13F BAIN CAP SPECIALTY FIN CEF 05684B107 13,435 1,252 10.28 202 -0.50 0.0032
2025-05-15 2025-03-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 12,183 -62 -0.51 202 -5.61 0.0039
2025-02-13 2024-12-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 12,245 1,715 16.29 215 25.15 0.0040
2024-11-14 2024-09-30 13F BAIN CAP SPECIALTY FIN CEF 05684B107 10,530 0 0.00 172 0.00 0.0036
2024-08-13 2024-06-30 13F BAIN CAP SPECIALTY FIN CEF 05684B107 10,530 10,530 172 0.0036
2024-05-06 2024-03-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 0 -9,317 -100.00 0 -100.00
2024-02-09 2023-12-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 9,317 9,317 140 0.0034
2023-08-09 2023-06-30 13F BAIN CAP SPECIALTY FIN CEF 05684B107 0 -9,193 -100.00 0 -100.00
2023-05-17 2023-03-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 9,193 37 0.40 110 0.93 0.0030
2023-02-13 2022-12-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 9,156 9,156 109 0.0033
2022-02-14 2021-12-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 0 -11,071 -100.00 0 -100.00
2021-11-05 2021-09-30 13F BAIN CAP SPECIALTY FIN CEF 05684B107 11,071 8,107 273.52 164 264.44 0.0052
2021-08-12 2021-06-30 13F BAIN CAP SPECIALTY FIN CEF 05684B107 2,964 2,964 45 0.0014
2021-05-24 2021-03-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 0 -2,329 -100.00 0 -100.00
2021-02-09 2020-12-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 2,329 218 10.33 28 27.27 0.0011
2020-11-16 2020-09-30 13F BAIN CAP SPECIALTY FIN CEF 05684B107 2,111 2,111 -9.36 22 -21.43 0.0010
2020-08-10 2020-06-30 13F BAIN CAP SPECIALTY FIN CEF 05684B107 0 -1,124 -100.00 0 -100.00
2020-05-15 2020-03-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 1,124 -1 -0.09 10 -54.55 0.0007
2020-02-04 2019-12-31 13F BAIN CAP SPECIALTY FIN CEF 05684B107 1,125 800 246.15 22 266.67 0.0012
2019-11-04 2019-09-30 13F BAIN CAP SPECIALTY FIN Stock 05684B107 325 0 0.00 6 0.00 0.0004
2019-08-01 2019-06-30 13F BAIN CAP SPECIALTY FIN Stock 05684B107 325 0 0.00 6 0.00 0.0004
2019-05-20 2019-03-31 13F BAIN CAP SPECIALTY FIN Stock 05684B107 325 325 6 0.0004
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.