* fix(holdings): carry provider cost_basis forward to calculated rows
Providers like IBKR Flex emit holdings on report_date and only
include trades within the query window. The reverse calculator + gapfill therefore produces rows past report_date with nil cost_basis, even though the provider supplied a basis on the snapshot. That nil basis silently blanks `Trend`, the Reports "Total Return" card, the Top Holdings return column, and Gains by Tax Treatment, because every one of them gates on `holding.avg_cost`.
When a calculated row would otherwise have no usable cost_basis, backfill it with the most recent provider-supplied cost_basis for the same (security, currency) on or before the holding date. Existing calculated/manual values are preserved (they outrank a provider carry-forward), and existing provider carry-forwards are refreshed when a newer snapshot supersedes them.
* - Fix currency mismatch: provider snapshots were keyed by (security_id,
currency) but calculated rows use account currency while IBKR provider
rows use the security's native currency (e.g., USD vs EUR). Now keyed
by security_id only; carry_forward_provider_cost_basis converts via
Money#exchange_to at the snapshot date (same convention as
ReverseCalculator for trade prices), with a ConversionError fallback.
- Trim long inline comment to three lines
- Fix safe-nav inconsistency: existing.cost_basis.positive? ->
existing&.cost_basis&.positive?
- Add test: refreshes stale carry-forward when a newer provider snapshot
arrives
- Add test: carry-forward is a no-op for forward-strategy accounts with
no provider holdings
* fix(holdings): prevent overwriting zero-valued manual cost basis
Ensure that manual cost basis entries with a value of zero (e.g., for free
shares) are not overwritten by provider carry-forward values during
materialization.
Additionally, updated the logic to allow zero-valued manual or
calculated cost bases to be preserved, and added tests to verify
currency conversion and error handling during cost basis carry-forward.
* refactor(holdings): allow zero-valued cost basis in provider snapshots
Remove the filter that restricted provider cost basis snapshots to values
greater than zero. This ensures that manual cost basis entries with a
value of zero (e.g., for free shares) are correctly captured and
available for carry-forward logic.
* perf(holdings): optimize provider cost basis snapshot lookup
Filter provider cost basis snapshots by the security IDs present in the
current holdings set to reduce the amount of data loaded into memory.
* refactor(holdings): move PortfolioCache FX fix to dedicated branch
Remove date-accurate exchange rate fix from this branch — it has been
split into fix/portfolio-cache-historical-fx-rate to keep concerns
separate.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* revert(portfolio_cache): restore date-accurate FX in get_price
36676784 removed date: date from exchange_to intending to move it to
fix/portfolio-cache-historical-fx-rate, but that branch was a duplicate
of db1051d2 which was already in main. The revert therefore regressed
portfolio_cache.rb below main's state. Restore the historical exchange
rate lookup so this branch no longer removes a fix already present in main.
* fix(portfolio_cache): restore date-accurate FX and its test
36676784 removed date: date from exchange_to and deleted the historical
FX test, intending to carry them in fix/portfolio-cache-historical-fx-rate.
That branch was a duplicate of db1051d2 already in main, so the removal
regressed portfolio_cache.rb below main's state. Restore both.
---------
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
* Performance improvements in holding calculation pipeline
Investment accounts with large histories were pegging CPU at 100% during
sync. Root cause was a cluster of quadratic and superlinear algorithms in
the inner holding calculation loop. All are replaced with O(1) hash lookups
built from single-pass indexes over the already-loaded data.
Holding::PortfolioCache - load_prices:
Three O(SxN) patterns inside the per-security loop:
1. DB prices: `security.prices.where(...)` fired one SQL query per
security (N+1). Replaced with a single bulk query before the loop:
Security::Price.where(security_id: ..., date: ...).group_by(&:security_id)
70 securities -> 70 queries becomes 1.
2. Trade prices: `trades.select { |t| t.entryable.security_id == id }`
scanned the full trades array for every security - O(SxT). Replaced
with trades_by_security_id, pre-indexed once from the loaded array.
3. Holding prices: `holdings.select { |h| h.security_id == id }` - same
O(SxH) pattern. Replaced with holdings_by_security_id.
Prices are now indexed into prices_by_date and prices_by_date_and_source
hashes during load_prices, making get_price O(1) instead of scanning the
flat prices array on every lookup.
Holding::PortfolioCache - get_trades / get_price:
- get_trades(date:): `trades.select { |t| t.date == date }` (O(T) scan)
replaced with trades_by_date hash (O(1)).
- get_price: two `prices.select { p.date == date ... }.min_by` linear
scans replaced with direct hash lookups into prices_by_date and
prices_by_date_and_source.
Holding::PortfolioCache - collect_unique_securities:
`holdings.map(&:security)` traversed the security association on every
holding record (N+1 if not preloaded). Replaced with a pluck of
security_ids followed by a single Security.where(id: ...) batch load.
Holding::ForwardCalculator / ReverseCalculator:
`holdings += build_holdings(...)` allocated a new array copy on every
iteration - O(N) per day x thousands of days = O(D^2) total allocations.
Replaced with holdings.concat(...) which appends in place, O(1).
Holding::ReverseCalculator - precompute_cost_basis:
Old: walked every date from account.start_date to Date.current (O(D)),
writing a cost_basis entry for every security on every date. For an
account with 2 trades over 9,250 days this wrote ~18,500 hash entries
and consumed the full date range in the outer loop regardless of trade
density.
New: walks only buy trades (O(T)), appending one [date, avg_cost]
snapshot per trade. cost_basis_for binary-searches the sparse snapshot
array - O(log T) per lookup. Memory drops from O(DxS) to O(T).
Holding::Gapfillable:
`security_holdings.find { |h| h.date == date }` was called on every
date in the gapfill range - O(H) per date, O(HxD) total. Replaced with
security_holdings.index_by(:date) built once before the loop, making
each date lookup O(1).
Holding::Materializer - purge_stale_holdings:
`account.entries.trades.map { |entry| entry.entryable.security_id }.uniq`
loaded all trade entry records into Ruby then traversed the entryable
association on each (N+1). Replaced with account.trades.pluck(:security_id).uniq
(single SQL query returning only the IDs).
In testing, these changes were able to reduce sync time of an account with
25 years of history and 70 securities from about 90 minutes down to under
3 minutes.
* Lint fix
* Lint fix
* addressing the open review nits I agreed with:
* return dup'd arrays from PortfolioCache#get_trades so callers can't mutate memoized cache state
* use the precomputed security-id indexes in collect_unique_securities
* keep security-id dedupe in SQL via distinct.pluck(:security_id)
* tighten the DB price preload to select only needed columns
* harden cost-basis assertions with assert_in_delta
* Back out unnecessary AI slop
* Add back dup to trades array returned from memoized hash
trades_by_date[date] returns a live reference into the memoized hash.
Any caller that mutates the result would silently corrupt the cache for
subsequent calls on the same date within the same sync run. Add .dup to
return a shallow copy, matching the safety of the original select path.
* Add cost basis tracking and management to holdings
- Added migration to introduce `cost_basis_source` and `cost_basis_locked` fields to `holdings`.
- Implemented backfill for existing holdings to set `cost_basis_source` based on heuristics.
- Introduced `Holding::CostBasisReconciler` to manage cost basis resolution logic.
- Added user interface components for editing and locking cost basis in holdings.
- Updated `materializer` to integrate reconciliation logic and respect locked holdings.
- Extended tests for cost basis-related workflows to ensure accuracy and reliability.
* Fix cost basis calculation in holdings controller
- Ensure `cost_basis` is converted to decimal for accurate arithmetic.
- Fix conditional check to properly validate positive `cost_basis`.
* Improve cost basis validation and error handling in holdings controller
- Allow zero as a valid cost basis for gifted/inherited shares.
- Add error handling with user feedback for invalid cost basis values.
---------
Co-authored-by: Josh Waldrep <joshua.waldrep5+github@gmail.com>
- Refactored `persist_holdings` to separate and conditionally upsert holdings with and without cost_basis.
- Updated `avg_cost` logic to treat 0 cost_basis as unknown and return nil when cost_basis cannot be determined.
- Modified trend and investment calculation to exclude holdings with unknown cost_basis.
- Adjusted `average_cost` formatting to handle nil values in API responses and views.
- Added comprehensive tests to ensure cost_basis preservation and fallback behavior.
- Localized `unknown` label for display when cost_basis is unavailable.
Co-authored-by: Josh Waldrep <joshua.waldrep5+github@gmail.com>
* Handle reverse calculator starting portfolio generation correctly
* Fix current_holdings to handle different dates and hide zero quantities
- Use DISTINCT ON to get most recent holding per security instead of assuming same date
- Filter out zero quantity holdings from UI display
- Maintain cash display regardless of zero balance
- Use single efficient query with proper Rails syntax
* Continue to process holdings even if one is not resolvable
* Lint fixes
