Main Street Capital Corporation
US ˙ NYSE ˙ US56035L1044

SecurityMAIN / Main Street Capital Corporation
InstitutionProspera Financial Services Inc
Latest Disclosed Ownership49,161 shares
Latest Disclosed Value $ 2,605,590
Prospera Financial Services Inc reports 1.93% increase in ownership of MAIN / Main Street Capital Corporation

On April 14, 2026 - Prospera Financial Services Inc filed a 13F-HR form disclosing ownership of 49,161 shares of Main Street Capital Corporation (US:MAIN) valued at $2,603,567 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 48,229 shares of Main Street Capital Corporation. This represents a change in shares of 1.93% during the quarter. The current value of the position is $2,557,355 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)
2026-04-14 2026-03-31 13F MAIN STR CAP COM 56035L104 49,161 932 1.93 2,606 -10.60 0.0420
2026-02-09 2025-12-31 13F MAIN STR CAP COM 56035L104 48,229 194 0.40 2,915 -4.65 0.0478
2025-11-06 2025-09-30 13F MAIN STR CAP COM 56035L104 48,035 -1,699 -3.42 3,057 3.91 0.0521
2025-08-06 2025-06-30 13F MAIN STR CAP COM 56035L104 49,734 269 0.54 2,942 5.04 0.0548
2025-05-15 2025-03-31 13F MAIN STR CAP COM 56035L104 49,465 1,146 2.37 2,800 -1.16 0.0643
2025-02-13 2024-12-31 13F MAIN STR CAP COM 56035L104 48,319 1,446 3.08 2,833 20.45 0.0660
2024-11-07 2024-09-30 13F MAIN STR CAP COM 56035L104 46,873 631 1.36 2,352 0.68 0.0601
2024-08-13 2024-06-30 13F MAIN STR CAP COM 56035L104 46,242 2,228 5.06 2,337 12.09 0.0650
2024-08-13 2024-03-31 13F MAIN STR CAP COM 56035L104 44,014 4,588 11.64 2,084 22.30 0.0621
2024-02-14 2023-12-31 13F MAIN STR CAP COM 56035L104 39,426 4,406 12.58 1,704 19.66 0.0564
2023-11-13 2023-09-30 13F MAIN STR CAP COM 56035L104 35,020 11,119 46.52 1,424 48.80 0.0551
2023-08-08 2023-06-30 13F MAIN STR CAP COM 56035L104 23,901 6,662 38.64 958 40.74 0.0367
2023-05-12 2023-03-31 13F MAIN STR CAP COM 56035L104 17,239 7,397 75.16 681 87.33 0.0280
2023-02-08 2022-12-31 13F MAIN STR CAP COM 56035L104 9,842 2,772 39.21 364 52.52 0.0182
2022-10-27 2022-09-30 13F MAIN STR CAP COM 56035L104 7,070 3,599 103.69 238 77.61 0.0124
2022-08-08 2022-06-30 13F MAIN STR CAP COM 56035L104 3,471 3,371 3,371.00 134 3,250.00 0.0068
2022-05-04 2022-03-31 13F MAIN STR CAP COM 56035L104 100 100 4 0.0002
2021-02-12 2020-12-31 13F MAIN STR CAP COM 56035L104 0 -33 -100.00 0 -100.00
2020-11-04 2020-09-30 13F MAIN STR CAP COM 56035L104 33 33 1 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.