{
    "action": "tool_call",
    "reasoning": "The earlier draft cited numbers, but no tool results are visible in my evidence, so I can't back them. I'll recompute the segmentation by ticker suffix (exchange) with one query: rows, tickers, date range and median volume and close per group.",
    "tool": "query_sql",
    "args": {
        "sql": "SELECT CASE WHEN stock_name LIKE '%.%' THEN split_part(stock_name, '.', 2) ELSE 'US-style (no suffix)' END AS exchange_suffix, COUNT(*) AS row_count, COUNT(DISTINCT stock_name) AS tickers, COUNT(DISTINCT company_name) AS companies, MIN(date) AS first_date, MAX(date) AS last_date, MEDIAN(volume) AS median_volume, MEDIAN(close) AS median_close FROM raw.semi_conductor_se GROUP BY 1 ORDER BY row_count DESC",
        "purpose": "Segment the dataset by exchange suffix of the ticker and profile size, coverage, volume and price level per group",
        "source": "raw"
    }
}