Bain Capital Specialty Finance, Inc.
US ˙ NYSE ˙ US05684B1070

SecurityBCSF / Bain Capital Specialty Finance, Inc.
InstitutionInvesco Ltd.
Latest Disclosed Ownership48,367 shares
Latest Disclosed Value $ 599,751
Invesco Ltd. reports 7.50% increase in ownership of BCSF / Bain Capital Specialty Finance, Inc.

On May 12, 2026 - Invesco Ltd. filed a 13F-HR form disclosing ownership of 48,367 shares of Bain Capital Specialty Finance, Inc. (US:BCSF) valued at $599,751 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 19, 2026 disclosing 44,994 shares of Bain Capital Specialty Finance, Inc.. This represents a change in shares of 7.50% during the quarter. The current value of the position is $639,895 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.

Upgrade to unlock premium data and export to Excel .

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 BAIN CAP SPECIALTY FIN COM STK 05684B107 48,367 3,373 7.50 600 -4.16 0.0000
2026-02-19 2025-12-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 44,994 -52,912 -54.04 626 -55.20 0.0001
2025-11-13 2025-09-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 97,906 13,795 16.40 1,395 10.28 0.0002
2025-08-13 2025-06-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 84,111 9,017 12.01 1,265 1.52 0.0002
2025-05-12 2025-03-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 75,094 -442 -0.59 1,247 -5.82 0.0002
2025-02-13 2024-12-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 75,536 15,185 25.16 1,323 32.17 0.0002
2024-11-12 2024-09-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 60,351 6,829 12.76 1,002 14.79 0.0002
2024-08-13 2024-06-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 53,522 5,774 12.09 873 16.58 0.0002
2024-05-14 2024-03-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 47,748 47,748 749 0.0002
2024-02-12 2023-12-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 0 -679,573 -100.00 0 -100.00
2023-11-13 2023-09-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 679,573 -92,914 -12.03 10,404 -0.31 0.0028
2023-08-11 2023-06-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 772,487 -87,416 -10.17 10,436 1.81 0.0027
2023-05-12 2023-03-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 859,903 144,868 20.26 10,250 20.47 0.0029
2023-02-13 2022-12-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 715,035 -67,549 -8.63 8,509 -9.40 0.0025
2022-11-14 2022-09-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 782,584 -77,071 -8.97 9,391 -19.74 0.0030
2022-08-15 2022-06-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 859,655 40,237 4.91 11,700 -8.41 0.0035
2022-05-16 2022-03-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 819,418 -88,217 -9.72 12,775 -7.46 0.0033
2022-02-14 2021-12-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 907,635 -142,610 -13.58 13,805 -11.43 0.0033
2021-11-15 2021-09-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 1,050,245 45,095 4.49 15,586 1.35 0.0039
2021-08-17 2021-06-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 1,005,150 50,022 5.24 15,379 8.94 0.0038
2021-05-17 2021-03-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 955,128 80,939 9.26 14,117 33.13 0.0038
2021-02-16 2020-12-31 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 874,189 804,110 1,147.43 10,604 1,383.08 0.0031
2020-11-16 2020-09-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 70,079 -32,427 -31.63 715 -37.06 0.0002
2020-08-14 2020-06-30 13F BAIN CAP SPECIALTY FIN COM STK 05684B107 102,506 32,643 46.72 1,136 75.31 0.0004
2020-05-15 2020-03-31 13F BAIN CAP SPECIALTY FIN COM 05684B107 69,863 -7,447 -9.63 648 -57.59 0.0003
2020-02-14 2019-12-31 13F BAIN CAP SPECIALTY FIN COM 05684B107 77,310 -4,891 -5.95 1,528 -1.99 0.0005
2019-11-14 2019-09-30 13F BAIN CAP SPECIALTY FIN COM 05684B107 82,201 -2,646 -3.12 1,559 -1.33 0.0004
2019-08-14 2019-06-30 13F/A-1 BAIN CAP SPECIALTY FIN COM 05684B107 84,847 84,847 1,580 0.0004
2019-08-14 2019-06-30 13F BAIN CAP SPECIALTY FIN COM 05684B107 84,847 1,580 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.