Main Street Capital Corporation
US ˙ NYSE ˙ US56035L1044

SecurityMAIN / Main Street Capital Corporation
InstitutionColdstream Capital Management Inc
Latest Disclosed Ownership35,626 shares
Latest Disclosed Value $ 1,886,769
Coldstream Capital Management Inc reports 1.27% decrease in ownership of MAIN / Main Street Capital Corporation

On May 8, 2026 - Coldstream Capital Management Inc filed a 13F-HR form disclosing ownership of 35,626 shares of Main Street Capital Corporation (US:MAIN) valued at $1,886,753 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 36,086 shares of Main Street Capital Corporation. This represents a change in shares of -1.27% during the quarter. The current value of the position is $1,806,594 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)
2026-05-08 2026-03-31 13F MAIN STR CAP COM 56035L104 35,626 -460 -1.27 1,887 -13.45 0.0203
2026-02-09 2025-12-31 13F MAIN STR CAP COM 56035L104 36,086 -933 -2.52 2,179 -7.43 0.0281
2025-11-19 2025-09-30 13F MAIN STR CAP COM 56035L104 37,019 314 0.86 2,354 8.53 0.0317
2025-08-12 2025-06-30 13F MAIN STR CAP COM 56035L104 36,705 254 0.70 2,169 5.24 0.0355
2025-05-13 2025-03-31 13F MAIN STR CAP COM 56035L104 36,451 -7,024 -16.16 2,062 -19.05 0.0439
2025-02-14 2024-12-31 13F MAIN STR CAP COM 56035L104 43,475 2,087 5.04 2,547 22.70 0.0543
2024-11-18 2024-09-30 13F/A-1 MAIN STR CAP COM 56035L104 41,388 1,829 4.62 2,075 3.91 0.0448
2024-11-18 2024-09-30 13F MAIN STR CAP COM 56035L104 41,388 2,075
2024-08-07 2024-06-30 13F MAIN STR CAP COM 56035L104 39,559 -43 -0.11 1,997 6.62 0.0487
2024-05-14 2024-03-31 13F MAIN STR CAP COM 56035L104 39,602 9,741 32.62 1,874 45.19 0.0476
2024-02-09 2023-12-31 13F MAIN STR CAP COM 56035L104 29,861 29,861 1,291 0.0361
2018-05-15 2018-03-31 13F MAIN STREET CAPITAL COM 56035L104 0 -17,791 -100.00 0 -100.00
2018-02-14 2017-12-31 13F MAIN STREET CAPITAL COM 56035L104 17,791 933 5.53 707 5.52 0.0767
2017-11-15 2017-09-30 13F MAIN STREET CAPITAL COM 56035L104 16,858 40 0.24 670 3.55 0.0779
2017-08-14 2017-06-30 13F MAIN STREET CAPITAL COM 56035L104 16,818 950 5.99 647 6.59 0.0835
2017-05-09 2017-03-31 13F MAIN STREET CAPITAL COM 56035L104 15,868 1,438 9.97 607 14.31 0.0839
2017-02-09 2016-12-31 13F MAIN STREET CAPITAL COM 56035L104 14,430 4,688 48.12 531 58.98 0.0864
2016-11-14 2016-09-30 13F/A-2 MAIN STREET CAPITAL COM 56035L104 9,742 -12,722 -56.63 334 -54.74 0.0592
2016-11-14 2016-09-30 13F/A-1 MAIN STREET CAPITAL COM 56035L104 9,742 -12,722 334 0.0592
2016-11-14 2016-09-30 13F MAIN STREET CAPITAL COM 56035L104 9,742 -12,722 334 0.0592
2016-08-09 2016-06-30 13F MAIN STREET CAPITAL COM 56035L104 22,464 13,659 155.13 738 167.39 0.1308
2016-05-16 2016-03-31 13F MAIN STREET CAPITAL COM 56035L104 8,805 856 10.77 276 19.48 0.0503
2016-02-04 2015-12-31 13F MAIN STREET CAPITAL COM 56035L104 7,949 7,949 231 0.0502
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.