get_split_history

Get stock split history for a company including forward and reverse splits with dates, ratios, type classification, and cumulative 2-year reverse split ratio. Relevant for NASDAQ/NYSE minimum bid-price compliance (1:250 cumulative reverse-split cap).

IMPORTANT: cumulativeReverseSplitRatio2yr is null when it CANNOT BE STATED, which is NOT the same as no reverse splits — read cumulativeWithheldReason to tell them apart.

unconfirmed_splits_in_window means at least one in-window reverse split is evidenced by only one source, so no cumulative is defensible: the confirmed splits alone would understate it, and understating a cumulative can put an issuer that breaches the 1:250 cap under it.

Each row also carries confirmed; a confirmed: false split appears only in the announcement calendar, which retains every announcement and retracts none, so it is usually an amended or superseded announcement and occasionally a real split the effected-splits ledger missed. Both are returned. ratioDisplay and type are likewise null for a ratio whose exact factor cannot be determined.

NOT EVERY VENDOR "SPLIT" IS A SPLIT: stock dividends and other distributions under 25%, spin-off price factors and consolidations under 1.5x are returned in nonSplitAdjustments (each with a kind and meaning), never in splits, and are excluded from totalSplits, reverseSplitCount and the cumulative. Do not describe them as splits.