Interactive Brokers
Asset-segregation composite governed by the weaker axis — (segregation × ) = 8.0, (custody tier) = 8.0. Dimension score = 8.0.
Capped at 7.0/10 — no negative-balance protection (jurisdiction not mandating it).
No (jurisdiction not mandating it). Withdrawal Integrity is capped at 7.0/10 regardless of other withdrawal performance (it would otherwise be 8.5). Approximate composite impact: −1.9 points.
Interactive Brokers scores 88/100 — the strongest custodial-safety profile we've scored. A CIRO-regulated Canadian entity, CIPF coverage to CAD $1M per category, and nearly five decades of operation behind a public, S&P 500 parent. The one real drag is Asset Segregation: IBKR rehypothecates margin collateral, and while it's disclosed and over-collateralised daily at 103%, the weak-link scoring holds the dimension to 8.0 — strong, not perfect. Withdrawal Integrity is capped at 7 because Canada doesn't mandate negative-balance protection and IBKR doesn't volunteer it.
Canadians who want maximum custodial safety and broad market access, and who hold fully-paid positions or understand margin rehypothecation.
You want a single flat withdrawal experience with no holds, or you're trading on margin and want a broker that doesn't rehypothecate collateral at all.
Outbound link — no affiliate relationship.
TraderVerdict brokerage scores assess custodial safety from a Canadian investor perspective. Scores do not constitute investment advice. Verify all details directly with the broker before opening an account.
Scores are on a 1–10 scale. = one step on the scoring ladder. Source links open primary evidence.