Main Street Capital Corporation (MAIN)
MAIN moved a median of +0.06% 30 minutes after news, and -0.09% by the close. How MAIN actually reacts to news — the realized, point-in-time move the market made, measured across 671 labeled events over the last three years with zero look-ahead.
MAIN’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 50% | 668 |
| 30-min | +0.06% | 52% | 670 |
| 60-min | +0.12% | 55% | 670 |
| to close | -0.09% | 44% | 670 |
| Middle 50% of MAIN reactions | -0.29% to +0.40% |
|---|---|
| Median reaction (30-min) | +0.06% |
| Measured reactions | 671 |
Half of all Main Street Capital Corporation news events land between -0.29% and +0.40% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How MAIN reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Rating reiterations | 35 | -0.02% | 49% | -0.04% |
| Price-target raises | 13 | +0.08% | 62% | +0.14% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 4 further classes were observed with fewer than 10 measured events and are not published. See how MAIN ranks against every other measured name →
That’s how MAIN usually reacts — get an email when it moves on news →Email me when MAIN moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to MAIN's baseline. Nothing else.
Recent MAIN events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| Form 40-17G Main Street Capital CORP | SEC filing · Form 40-17G | SEC EDGAR | +0.16% | +0.51% | |
| Form 8-K Main Street Capital CORP For: Oct 15 | SEC filing · Form 8-K | SEC EDGAR | -0.16% | +0.57% | |
| Main Street Announces Preliminary Estimate of Third Quarter 2026 Operating Results | Press release | PR Newswire | +0.77% | +1.21% | |
| Form 8-K Main Street Capital CORP For: Oct 08 | SEC filing · Form 8-K | SEC EDGAR | +0.09% | +1.16% | |
| Main Street Announces Third Quarter 2026 Private Loan Portfolio Activity | Press release | PR Newswire | +0.50% | +1.58% | |
| Main Street Announces New Portfolio Investment | Press release | PR Newswire | +0.15% | -0.67% | |
| Form 8-K Main Street Capital CORP For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | -0.71% | -0.80% | |
| Form 10-Q Main Street Capital CORP For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.20% | -0.42% | |
| Form 8-K Main Street Capital CORP For: Aug 06 | SEC filing · Form 8-K | SEC EDGAR | +1.97% | +4.34% | |
| MAIN STREET ANNOUNCES SECOND QUARTER 2026 RESULTS | Press release | PR Newswire | +1.97% | +4.34% | |
| Form 8-K Main Street Capital CORP For: Aug 04 | SEC filing · Form 8-K | SEC EDGAR | +0.02% | +1.76% | |
| Main Street Announces Fourth Quarter 2026 Regular Monthly Dividends and Supplemental Dividend Payable in September 2026 | Press release | PR Newswire | +0.02% | +1.76% | |
| Form 8-K Main Street Capital CORP For: Jul 16 | SEC filing · Form 8-K | SEC EDGAR | +0.66% | +4.01% | |
| Main Street Announces Preliminary Estimate of Second Quarter 2026 Operating Results | Press release | PR Newswire | +0.66% | +4.01% | |
| Form 8-K Main Street Capital CORP For: Jul 09 | SEC filing · Form 8-K | SEC EDGAR | +0.01% | +1.04% | |
| Main Street Announces Second Quarter 2026 Private Loan Portfolio Activity | Press release | PR Newswire | -0.45% | +0.72% | |
| Form 8-K Main Street Capital CORP For: Jun 29 | SEC filing · Form 8-K | SEC EDGAR | +1.81% | +0.02% | |
| Main Street Announces Amendment of its Corporate Credit Facility | Press release | PR Newswire | -0.13% | +0.39% | |
| Main Street Announces Exit of Portfolio Investment | Press release | PR Newswire | +0.20% | -0.44% | |
| Form 8-K Main Street Capital CORP For: Jun 11 | SEC filing · Form 8-K | SEC EDGAR | -0.02% | +0.66% | |
| Form 10-Q Main Street Capital CORP For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | +0.12% | +0.88% | |
| Form 8-K Main Street Capital CORP For: May 07 | SEC filing · Form 8-K | SEC EDGAR | -1.88% | -3.12% | |
| MAIN STREET ANNOUNCES FIRST QUARTER 2026 RESULTS | Press release | PR Newswire | -1.88% | -3.12% | |
| Form 8-K Main Street Capital CORP For: May 04 | SEC filing · Form 8-K | SEC EDGAR | -0.07% | -0.38% | |
| Form 8-K Main Street Capital CORP For: May 05 | SEC filing · Form 8-K | SEC EDGAR | +0.03% | +2.08% | |
| Main Street Announces Third Quarter 2026 Regular Monthly Dividends, Including a Monthly Dividend Increase, and Supplemental Dividend Payable in June 2026 | Press release | PR Newswire | -0.16% | +2.15% | |
| Main Street Announces New Portfolio Investment | Press release | PR Newswire | +0.21% | +1.33% | |
| Main Street Announces Follow-On Investment | Press release | PR Newswire | +0.24% | -2.08% | |
| Form 8-K Main Street Capital CORP For: Apr 16 | SEC filing · Form 8-K | SEC EDGAR | +0.25% | -5.35% | |
| Main Street Announces Preliminary Estimate of First Quarter 2026 Operating Results | Press release | PR Newswire | -2.22% | -7.36% | |
| Form 8-K Main Street Capital CORP For: Apr 08 | SEC filing · Form 8-K | SEC EDGAR | +0.04% | -0.77% | |
| Form 8-K Main Street Capital CORP For: Apr 09 | SEC filing · Form 8-K | SEC EDGAR | +0.44% | -1.27% | |
| Main Street Announces Completion of $150.0 Million Investment Grade Notes Offering | Press release | PR Newswire | +0.04% | -0.77% | |
| Main Street Announces First Quarter 2026 Private Loan Portfolio Activity | Press release | PR Newswire | +0.44% | -1.27% | |
| Main Street Announces Follow-On Investment | Press release | PR Newswire | -0.51% | -2.54% | |
| Form 8-K Main Street Capital CORP For: Mar 27 | SEC filing · Form 8-K | SEC EDGAR | -0.51% | -2.54% | |
| Form 497AD Main Street Capital CORP | SEC filing · Form 497AD | SEC EDGAR | +0.54% | -0.52% | |
| Main Street Prices Public Offering of $200,000,000 Million of 6.95% Notes due 2029 | Press release | PR Newswire | +0.54% | -0.52% | |
| Form DEF 14A Main Street Capital CORP For: Mar 23 | SEC filing · Form DEF | SEC EDGAR | -0.10% | +0.04% | |
| Main Street Announces New Portfolio Investment | Press release | PR Newswire | -0.25% | -0.18% | |
| Main Street Announces New Portfolio Investment | Press release | PR Newswire | -0.19% | +1.97% | |
| Main Street Announces Follow-On Investments | Press release | PR Newswire | +1.57% | +2.20% | |
| Form 10-K Main Street Capital CORP For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | -0.14% | -0.58% | |
| Form 8-K Main Street Capital CORP For: Feb 26 | SEC filing · Form 8-K | SEC EDGAR | -0.87% | -2.92% | |
| MAIN STREET ANNOUNCES 2025 FOURTH QUARTER AND ANNUAL RESULTS | Press release | PR Newswire | -0.87% | -2.92% | |
| Form 8-K Main Street Capital CORP For: Feb 24 | SEC filing · Form 8-K | SEC EDGAR | -0.44% | +0.82% | |
| Main Street Announces Second Quarter 2026 Regular Monthly Dividends and Supplemental Dividend Payable in March 2026 | Press release | PR Newswire | +1.35% | +1.62% | |
| Main Street Announces Follow-On Investment | Press release | PR Newswire | -0.41% | -0.66% | |
| Main Street Announces Increase in Commitments Under its Corporate Credit Facility to $1.175 Billion | Press release | PR Newswire | -0.19% | +1.41% | |
| Main Street Announces New Portfolio Investment | Press release | PR Newswire | -1.26% | -1.90% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the MAIN section they belong to.
Where else MAIN is measured.
MAIN earnings → · Analyst actions → · SEC filings →
Other Financial Services names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Salisbury Bancorp, Inc. (SAL) | 679 | 0.00% | 35% |
| Impac Mortgage Holdings, Inc. (IMH) | 678 | 0.00% | 42% |
| Prospect Capital Corporation - Closed End Fund (PSEC) | 671 | 0.00% | 50% |
| State Street Corporation (STT) | 671 | +0.04% | 52% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Financial Services names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is Main Street Capital Corporation's median reaction calculated?
Every labeled MAIN news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 671 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 52% of MAIN's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does MAIN's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.