Strike-level flow concentration
Flow
Strike-level flow concentration
Where the directional money is going for {ticker}. Top-N strikes
by selected ordering (premium, net premium, volume, etc.) with
bullish/bearish premium split, ask/bid mix, and OI context. Includes
a top-3 concentration summary.
GET
Strike-level flow concentration
Authorizations
Skylit API key in the Authorization header
(Authorization: Bearer fs_live_<key>). X-API-Key is also accepted.
Path Parameters
Underlying ticker symbol (uppercase, e.g. SPY, AAPL).
Example:
"SPY"
Query Parameters
Lower bound of the window (RFC 3339, e.g. 2026-05-27T13:30:00Z).
Upper bound of the window (RFC 3339).
Number of strikes to return.
Required range:
1 <= x <= 100Restrict to calls or puts only.
Available options:
C, P Available options:
total_premium, net_premium, volume, trade_count Required range:
x >= 0Required range:
x >= 0Live momentum signal vs baseline (5m / 30m / 1h windows)Today's flow vs trailing average (with similar-days lookback)

