What if you'd held GBDC?
A $1,000 investment in Golub Capital BDC, Inc. (GBDC) at the month-end close of 2010-04 would be worth $3,693 at the close of 2026-09 — +269.3% total return, dividends reinvested. The same $1,000 in the S&P 500, dividends reinvested, would be worth $8,794.
Your scenario
Result
If you'd bought $1,000 at the start of each year
Value of $1,000 invested on January 1 of each year, held to 2026-09, dividends included.
Every year, $1,000 from 2010
| Year | Value of $1,000 | Year return |
|---|---|---|
| 2010 | $1,000 | — |
| 2011 | $986 | -1.4% |
| 2012 | $1,105 | +12.0% |
| 2013 | $1,420 | +28.6% |
| 2014 | $1,434 | +1.0% |
| 2015 | $1,434 | 0.0% |
| 2016 | $1,725 | +20.3% |
| 2017 | $1,834 | +6.3% |
| 2018 | $1,793 | -2.2% |
| 2019 | $2,170 | +21.0% |
| 2020 | $1,850 | -14.8% |
| 2021 | $2,180 | +17.8% |
| 2022 | $2,027 | -7.0% |
| 2023 | $2,589 | +27.7% |
| 2024 | $2,941 | +13.6% |
| 2025 | $2,925 | -0.5% |
| 2026 | $2,955 | +1.0% |
Best and worst month-end to buy
The best single month-end close to have bought GBDC was 2010-05 ($3.44): $1,000 then is $3,779 today. The worst was 2024-04 ($13.50): $1,000 then is $963.
FAQ
What would $1,000 in GBDC be worth today?
A $1,000 investment in Golub Capital BDC, Inc. (GBDC) at the start of 2010 would be worth about $3,693 today, a total return of +269.3%. Dividends are reinvested in these figures.
What were the best and worst years for GBDC?
Golub Capital BDC, Inc. (GBDC)'s strongest calendar year since 2010 was 2013, a +28.6% return — $1,000 held through that year became about $1,286 by year-end. Its weakest year was 2020, at -14.8%.
Does the calculator include dividends and splits?
Yes where available. Prices are adjusted for both stock splits and reinvested dividends (total return), the same measure brokerages use.
How much would $100 per month in GBDC have grown?
Investing $100 at the end of every month since 2010-04 would have grown to about $36,627 on $19,800 invested.
Did GBDC beat the S&P 500?
Over the same period, $1,000 in the S&P 500 with dividends reinvested (the S&P 500 Total Return index) would be worth $8,794. GBDC trailed the S&P 500 by +58.0% in total return.
Is this investment advice?
No. Wall Street Regrets is an entertainment and education tool. Every number is a historical calculation, not a prediction, and past performance never guarantees future results.
Methodology
Golub Capital BDC, Inc. (GBDC) historical total-return data from 2010-04 to 2026-09, reduced to month-end closes for the tables above.
Returns use adjusted close prices — adjusted for stock splits and reinvested dividends, the same convention used by major brokerages. End-of-day and live prices come from EODHD; parts of the deep historical series are carried over from Yahoo Finance data. A "year" scenario invests $1,000 at the prior December's month-end close and values it at the latest available month-end close. Non-USD amounts are converted at historical month-end exchange rates (EODHD): to USD on the buy date and back to your currency at the latest rate, so the return reflects the currency move as well as the asset.
Month-end resolution means intra-month extremes are not captured in tables; the calculator uses exact trading-day closes where daily data is available. Figures ignore taxes, fees, and the currency effects of non-USD listings. History is not a forecast. Wall Street Regrets is entertainment, not investment advice.
What if you'd held…
Data: adjusted close prices via EODHD and Yahoo Finance. As of 2026-09-04. Not financial advice.