RSA+
RSA+ Trading
What Reverse Split Arbitrage is, how it makes money, and which brokers to use.
Reverse Split Arbitrage (RSA) is a stock strategy that turns a broker’s rounding rule into profit. You buy a tiny position before a reverse split.
After the split you are left with a fraction of a share, and if your broker rounds that fraction up to a whole share, you now own a whole share worth far more than you paid. You sell it and keep the difference.
RSA scales by owning that same tiny position in as many broker accounts as possible, so one signal rounds up again and again across all of them.
The model in one line. The desktop Companion App does everything: it holds your broker logins locally, watches for RSA signals, and places the trades. The website dashboard at dashboard.tradelabs.org is an optional remote control. Trades only happen while the app is running on your computer.
RSA needs the RSA+ plan. RSA strategies, the TradeLabs feed signal source, and proxies are all RSA+ features. If you are on Copy Trading, you will need to upgrade before this path works.
How RSA makes money
Buy tiny, let the split round your fraction up to a whole share, sell the difference.
A single split rounds up once per account. That is why RSA scales by owning the same tiny position in many accounts, not by buying more in one place, and why the strategy you build fires one signal into every account at once.
Positions are small by design, so profit per account per play is modest. The strategy is repetition: many accounts, many plays, over time.
RSA carries real risk. Accounts that only ever trade reverse-split plays get flagged or closed. Pace your account creation, keep some normal trading activity in each account, and start with a few accounts and small money before you scale.
Why you spread across many accounts
Each account rounds its own fraction up to a whole share, so the more accounts you hold the split in, the more whole shares you collect from the same play. That is why RSA is a numbers game. Spread your accounts across several brokers rather than stacking one, and pace how fast you open them.
The brokers
TradeLabs supports automated RSA across eleven brokers. Spread your accounts across several of them rather than stacking one.
The full RSA lineup: Fennel, BBAE, Public, SoFi, DSPAC, Fidelity, WellsTrade, Robinhood, Chase, Webull, and Firstrade. All eleven ship in the RSA+ variant.
Every account limit, account type, fee, and signup note lives on the broker limits & signup page. A few notes that shape the order you open in:
- BBAE and DSPAC are one account each, mobile-only, and slow to settle deposits, so open them early.
- SoFi, Fidelity, WellsTrade, and Chase support many accounts but have creation caps you must space out.
Interactive Brokers and Tradier are not RSA-compatible.
Ready to build it?
When you understand the play and know which brokers you are opening, move on to setup: opening and funding accounts, connecting them in the app, building the RSA strategy, and going live across every account at once.