System 11 — Diversified Four-Layer
Coinbase, Fundrise, Acorns, and Wealthfront. One on-ramp, one real estate, one beginner robo, one premium robo with cash sweep.
Who this is for
Readers who want every functional layer present in the simplest possible four-platform stack.
System layers
- On-ramp: Coinbase. Single US crypto exchange.
- Yield venue (real estate): Fundrise. Private real-estate diversification.
- Yield venue (robo/managed): Acorns, Wealthfront. Two robo-advisers at different tiers. Wealthfront carries the cash sweep; Acorns carries the round-up automation.
Cadence
Quarterly cross-platform review with a single rebalance event.
Why it works
All four functional categories are represented even though it is only four platforms. Function-first sizing keeps the system honest.
What breaks it
Skipping the rebalance and letting one venue drift past 50% of the stack.