Interactive Brokers

What I use it for

Long-only equity positions in the AI supercycle names. Most of my conviction trades sit here, not on a crypto venue.
Cash equities + ETFs across the US, plus the half of the AI supply chain that doesn't trade in US sessions — TSMC in Taipei, ASML in Amsterdam, Samsung and SK Hynix in Seoul.
Paper-trading every tradfi bot in the QuantAbundancia fleet before any of them sees real capital. The IBKR paper account is on the same API, the same fills model, the same gateway as the live account — what passes paper has a real chance of surviving live.
FX hedging when a position introduces unwanted currency beta.

Margin rates. Competitive at retail size; the gap widens as the account grows. For a long-duration thematic book this compounds.
Real API. TWS / IB Gateway + the official Python client. Fills behave the way the docs say they behave. Order types I actually use (bracket, OCO, adaptive) all work programmatically.
Global venues, one account. TSMC, ASML, Samsung, SK Hynix, Tokyo Electron — the AI supercycle isn't a US-only trade. IBKR is the only retail broker I've found that gets me direct exchange access to all of them without ADR markup.
Paper account that matches live. Same gateway, same API surface, same data subscriptions. The translation cost from paper-validated to live is close to zero.
Jurisdiction. US-regulated entity. Statements reconcile cleanly for accounting.

The UI is built for institutions. TWS has a learning curve; if you're not going to use the API, the experience is worse than a modern app like Public or Robinhood.
Data subscriptions are à la carte. Real-time depth, exchange feeds, regional bundles — every line item is opt-in. Worth budgeting ~$10-30/month depending on what you actually want.
Customer support is slow and ticket-driven. Fine for me; not fine if you want hand-holding.
IB Gateway has its quirks: nightly reauth windows, occasional IBC re-login loops, the "unhealthy but Up" container state I learned to monitor for. None of these are dealbreakers, but you will operate the thing — it isn't a black box.
Withdrawal of margin cash is restricted on non-US-resident personal accounts. Worth checking against your own residency before you fund.

Bot infrastructure: every IBKR-routed bot in the fleet has its own runbook and walk-forward audit. See /bots/public for the live equity curves.

Long-only equity positions in the AI supercycle names. Most of my conviction trades sit here, not on a crypto venue.
Cash equities + ETFs across the US, plus the half of the AI supply chain that doesn't trade in US sessions — TSMC in Taipei, ASML in Amsterdam, Samsung and SK Hynix in Seoul.
Paper-trading every tradfi bot in the QuantAbundancia fleet before any of them sees real capital. The IBKR paper account is on the same API, the same fills model, the same gateway as the live account — what passes paper has a real chance of surviving live.
FX hedging when a position introduces unwanted currency beta.

Margin rates. Competitive at retail size; the gap widens as the account grows. For a long-duration thematic book this compounds.
Real API. TWS / IB Gateway + the official Python client. Fills behave the way the docs say they behave. Order types I actually use (bracket, OCO, adaptive) all work programmatically.
Global venues, one account. TSMC, ASML, Samsung, SK Hynix, Tokyo Electron — the AI supercycle isn't a US-only trade. IBKR is the only retail broker I've found that gets me direct exchange access to all of them without ADR markup.
Paper account that matches live. Same gateway, same API surface, same data subscriptions. The translation cost from paper-validated to live is close to zero.
Jurisdiction. US-regulated entity. Statements reconcile cleanly for accounting.

The UI is built for institutions. TWS has a learning curve; if you're not going to use the API, the experience is worse than a modern app like Public or Robinhood.
Data subscriptions are à la carte. Real-time depth, exchange feeds, regional bundles — every line item is opt-in. Worth budgeting ~$10-30/month depending on what you actually want.
Customer support is slow and ticket-driven. Fine for me; not fine if you want hand-holding.
IB Gateway has its quirks: nightly reauth windows, occasional IBC re-login loops, the "unhealthy but Up" container state I learned to monitor for. None of these are dealbreakers, but you will operate the thing — it isn't a black box.
Withdrawal of margin cash is restricted on non-US-resident personal accounts. Worth checking against your own residency before you fund.

Bot infrastructure: every IBKR-routed bot in the fleet has its own runbook and walk-forward audit. See /bots/public for the live equity curves.