Main Street Capital Corporation
US ˙ NYSE ˙ US56035L1044

SecurityMAIN / Main Street Capital Corporation
InstitutionStifel Financial Corp
Latest Disclosed Ownership15,195 shares
Latest Disclosed Value $ 804,674
Stifel Financial Corp reports 20.33% increase in ownership of MAIN / Main Street Capital Corporation

On May 12, 2026 - Stifel Financial Corp filed a 13F-HR form disclosing ownership of 15,195 shares of Main Street Capital Corporation (US:MAIN) valued at $804,727 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 12,628 shares of Main Street Capital Corporation. This represents a change in shares of 20.33% during the quarter. The current value of the position is $790,444 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 MAIN STR CAP COM 56035L104 15,195 2,567 20.33 805 5.51 0.0007
2026-02-13 2025-12-31 13F MAIN STR CAP COM 56035L104 12,628 -833 -6.19 763 -10.88 0.0007
2025-11-12 2025-09-30 13F MAIN STR CAP COM 56035L104 13,461 1,807 15.51 856 24.27 0.0008
2025-08-14 2025-06-30 13F MAIN STR CAP COM 56035L104 11,654 -758 -6.11 689 -1.99 0.0007
2025-05-14 2025-03-31 13F MAIN STR CAP COM 56035L104 12,412 1,116 9.88 702 6.20 0.0007
2025-02-13 2024-12-31 13F MAIN STR CAP COM 56035L104 11,296 425 3.91 662 21.28 0.0007
2024-11-14 2024-09-30 13F MAIN STR CAP COM 56035L104 10,871 636 6.21 545 5.62 0.0006
2024-08-13 2024-06-30 13F MAIN STR CAP COM 56035L104 10,235 -4,829 -32.06 517 -27.53 0.0006
2024-05-14 2024-03-31 13F MAIN STR CAP COM 56035L104 15,064 5,042 50.31 713 64.43 0.0008
2024-02-12 2023-12-31 13F MAIN STR CAP COM 56035L104 10,022 -782 -7.24 433 -1.14 0.0005
2023-11-13 2023-09-30 13F MAIN STR CAP COM 56035L104 10,804 644 6.34 439 7.88 0.0006
2023-08-14 2023-06-30 13F MAIN STR CAP COM 56035L104 10,160 -10,295 -50.33 407 -49.69 0.0006
2023-05-12 2023-03-31 13F MAIN STR CAP COM 56035L104 20,455 11,735 134.58 807 150.62 0.0012
2023-02-13 2022-12-31 13F MAIN STR CAP COM 56035L104 8,720 35 0.40 322 10.27 0.0005
2022-11-14 2022-09-30 13F MAIN STR CAP COM 56035L104 8,685 145 1.70 292 -11.25 0.0005
2022-08-15 2022-06-30 13F MAIN STR CAP COM 56035L104 8,540 3,364 64.99 329 48.87 0.0005
2022-05-13 2022-03-31 13F MAIN STR CAP COM 56035L104 5,176 -267 -4.91 221 -9.43 0.0003
2022-02-14 2021-12-31 13F MAIN STR CAP COM 56035L104 5,443 -1,254 -18.72 244 -11.27 0.0003
2021-11-15 2021-09-30 13F MAIN STR CAP COM 56035L104 6,697 -258 -3.71 275 -3.85 0.0004
2021-08-13 2021-06-30 13F MAIN STR CAP COM 56035L104 6,955 1,606 30.02 286 36.84 0.0004
2021-05-14 2021-03-31 13F MAIN STR CAP COM 56035L104 5,349 5,349 209 0.0003
2019-11-19 2019-09-30 13F/A-1 MAIN STREET CAPITAL COM 56035L104 0 -5,083 -100.00 0 -100.00
2019-08-14 2019-06-30 13F MAIN STREET CAPITAL COM 56035L104 5,083 5,083 207 0.0005
2019-02-13 2018-12-31 13F MAIN STREET CAPITAL COM 56035L104 0 -5,837 -100.00 0 -100.00
2018-11-13 2018-09-30 13F MAIN STREET CAPITAL COM 56035L104 5,837 0 0.00 226 0.44 0.0006
2018-08-14 2018-06-30 13F MAIN STREET CAPITAL COM 56035L104 5,837 90 1.57 225 6.13 0.0007
2018-05-11 2018-03-31 13F MAIN STREET CAPITAL COM 56035L104 5,747 7 0.12 212 -7.83 0.0007
2018-02-14 2017-12-31 13F MAIN STREET CAPITAL COM 56035L104 5,740 -140 -2.38 230 -2.54 0.0007
2017-11-13 2017-09-30 13F MAIN STREET CAPITAL COM 56035L104 5,880 -130 -2.16 236 2.16 0.0008
2017-08-14 2017-06-30 13F MAIN STREET CAPITAL COM 56035L104 6,010 6,010 231 0.0009
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.