- liquidation is now a pure function of state: the daily mark-to-market
netting no longer consumes the carried loss pools or the open
wash-sale candidates (unrealized gains/losses were leaking into the
carryover pools, so equity[t] depended on past unrealized values)
- loss offsetting is now global (chronological, by type) instead of
per-symbol: a symbol A gain consuming a symbol B loss marks B's event
consumed, so a later B repurchase cannot subtract the same loss a
second time (pools could go negative -> over-taxed gains)
- progressive mode: the reinvested after-tax remainder now uses the
SAME marginal rates the tax is recorded at (was flat d_keep/c_keep,
so recorded tax and cash flow diverged); the bracket position also
advances by net short-term gains
- renames: WASh->WASH, lt_rf/st_rf->lt_fed/st_fed (rf is the project's
risk-free-rate convention); buys pruned to the 30d wash window;
dropped the per-call sorted() on the constant bracket tables
tests: wash-sale disallowance; liquidation purity (no-trade day with
unrealized gains must not eat the pool); cross-symbol consumption (no
double subtract). All scenarios verified to fail on the pre-fix code.
Greg Pomerantz
2c48d94f69