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The most common forward-split ratios, 2016 to today

Answered against 22 years of US equities and 12 years of US options data and published with the query that produced it. This result is stored as of 2026-08-22, from How Often Do Stocks Split?.

as of ranking 8×2read in context →
The most common forward-split ratios, 2016 to today — 8 rows by 2 columns, computed from US exchange, SIP and OPRA data.
ratioforward_splits
2-for-1537
3-for-1270
5-for-1200
4-for-1184
10-for-1127
3-for-239
11-for-1036
1.1-for-129
Rows × columns
8 × 2
Computed
Completeness
No missing values
Source
US exchange, SIP and OPRA market data
Licence
Strasmore terms · free, no signup
Formats
JSON · CSV · the SQL below

What each column holds

Column definitions for The most common forward-split ratios, 2016 to today, derived from the stored result.
ColumnTypeRangeNotes
ratio text 8 distinct values (1.1-for-1, 10-for-1, 11-for-10…)
forward_splits number 29 to 537

Computed from Strasmore's warehouse of US exchange, SIP and OPRA market data. Equity prices are delayed; options greeks and implied volatility are end-of-day. This result is stored, not recomputed on load — it is exactly the numbers that were returned on , and the query below is what returned them.

the exact SQL behind every number 
SELECT concat(toString(split_to), '-for-', toString(split_from)) AS ratio,
       count() AS forward_splits
FROM global_markets.stocks_splits
WHERE adjustment_type = 'forward_split'
  AND execution_date BETWEEN toDate('2016-01-01') AND today()
GROUP BY ratio
ORDER BY forward_splits DESC
LIMIT 8

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