MOS Congressional Stock Trades

Coldpine has parsed 11 disclosed trades in $MOS by 2 members of Congress, drawn from 7 periodic transaction reports dated Feb 10, 2023 through Jul 20, 2026. That is 10 trades from House members and 1 trade from senators, filed 10 by Democrats and 1 by Republicans.

Of the 11 trades with a known filing lag, 1 was reported more than 45 days after the trade date, outside the window the STOCK Act sets. The median lag was 26 days. The longest was 116 days: a $MOS purchase by Alan Armstrong dated Mar 27, 2026, disclosed Jul 21, 2026. How late filing is measured across all of Congress is in the late-filers study.

10 of the 11 trades that list an account holder (91%) were reported under a spouse, dependent child, or joint account rather than the member directly.

Rohit Khanna filed the most $MOS purchases (6), and Rohit Khanna the most sales (4).

Activity peaked in 2026 with 5 trades.

Across the 7 purchases Coldpine can price, $MOS moved -4.99% on average between the trade date and the disclosure date, against +5.83% for the S&P 500 over the same windows. The stock was higher at disclosure than at the trade in 29% of those purchases. That is a record of what already happened, not a forecast. Method: what stocks do before Congress discloses.