Retiring a symbol meant delete_ticker or bootstrap_universe(prune_missing),
both of which cascade through OHLCV, setups and scores. That destroys exactly
the history four research documents already apologise for: today's tracked
universe projected backward is survivorship-biased, and hard-deleting every
delisted name is what causes it. Keeping the rows preserves the option to fix
that — it does not fix it, which needs the replay to model a delisting as an
exit event.
tickers gains delisted_on / delisted_reason (migration 032). NULL means
actively traded.
The filter is opt-in via ticker_service.active_only rather than folded into a
shared getter: the registry and admin views deliberately keep delisted rows so
the delisting is visible, and a silent default would undo that. Applied to the
live path only — scanner, momentum ranking, scoring, breadth, fundamentals
candidates, SEC universe, earnings import, ingestion loops. run_backtest keeps
them on purpose.
Detection runs off OHLCV staleness, not off the SEC fundamentals import: that
importer stalls for days on unrelated Company-Facts gaps and would take
detection down with it. On a stale symbol the scheduler asks SEC for a Form
25/25-NSE/15 and retires it only on a hit, so a halt or a rename (SATS->ECHO)
keeps the existing warning. The probe waits 3 stale days so a market-data
outage cannot turn into one SEC request per symbol per run.
Safe to automate because it is reversible: clear_delisted un-retires a false
positive, where a delete had already taken the history.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Operational plumbing to land the parser fixes and to make silent resolution
failures visible.
- Reparse: SecFundamentalsImporter(reparse=True) restages every accession with
the current parser and rewrites the ones that now reconstruct differently,
writing the full column set so a row is never half old-parse. Snapshots stay
immutable with respect to SEC; the stored row is our reconstruction, and after
a parser fix keeping it is a stale cache, not history. run_import(force=True)
bypasses the unchanged-revision no-op, since the staleness is on our side, not
the source's. Exposed as scripts/reparse_fundamentals.py, dry-run by default.
- CIK overrides: sec_universe reads a {symbol: cik} pin from
SystemSetting['sec_cik_overrides'], applied ahead of company_tickers.json, for
when SEC maps a ticker to a successor shell with no filings (XOM -> a zero-
filing "ExxonMobil Holdings Corp" while every 10-K/Q is under CIK 34088).
- Resolution validation: a tracked issuer resolving to a registrant with no XBRL
filings now records no_xbrl_filings and raises a warning naming the CIKs and
the override setting, instead of silently yielding nothing on every run.
- _diff_fields compares datetime instants, not representations: accepted_at
round-trips naive from SQLite but tz-aware from Postgres, which otherwise made
a reparse of identical data report every row as changed (and false-positived
the pre-existing discrepancy warning).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Addresses the slice-1 review:
1. Resolution is now read-only (A1 transaction contract). resolve_ciks /
fetch_sic_updates compute proposals and mutate nothing; a new
apply_ticker_updates issues the writes, called only in promote — so a failed
validation can't leak ticker changes on the framework's failure commit.
2. Only 404 means "missing". Added SecNotFoundError; daily_index /
latest_index_date catch only that. 403, exhausted 429, 5xx, timeouts, and
transport/parse errors now propagate instead of looking like "no index".
3. Fair-access enforced when opening a REAL client (transport=None): reject
blank/placeholder/non-email User-Agent and sub-0.11s spacing. Mock transports
skip it (tests use 0 spacing).
4. submissions(include_history=False) by default — only the one-time full
backfill fetches the history shards; SIC/incremental work makes no extra
requests.
Plus: retry transient 5xx/network errors and honor Retry-After during the 1 GB
backfill; compose_revision rejects a missing index date (no "None:..." revision).
Re-verified live vs real SEC (fair-access validation passes, shard merge intact).
Tests: 18 (added error propagation, read-only resolution, fair-access, recent-only
submissions, reject-None revision).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
First A3 implementation checkpoint (design: docs/dolt-sec-a3-design.md).
- sec_client.py: async SEC EDGAR client honoring fair-access — identifying
User-Agent (config), request spacing < 10 req/s, exponential backoff on 429,
and 403 -> SecForbiddenError (alert and stop, never retry-loop). Fetchers:
company_tickers (normalised, multi-class share CIK), submissions (merges the
paginated filings.files shards so full history is visible), companyfacts,
daily_index (fixed-width form.idx parse), latest_index_date.
- sec_universe.py: resolve_ciks (tickers.cik backfill), refresh_sic
(sic/sic_description), and the composite-revision pieces — universe_fingerprint
(a new ticker changes the revision, so it's never no_op'd/starved),
index_content_hash, compose_revision.
- config + .env.example: SEC_USER_AGENT (must be a real contact email) + spacing
/ retries / timeout.
Verified live against real SEC: AAPL->320193, GOOG==GOOGL, BRK-B resolved;
submissions shard-merge proven (131 filings back to 1993); daily index parsed.
Tests: 11 (mocked-transport parsing + 403/429 handling + resolution/fingerprint).
Full suite 713 passed. Next slice: companyfacts -> snapshot parser + importer.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
dennisthiessenandClaude Opus 5