Analysis · September 2026

The Overlap Index

Committee × sector — where lawmakers trade what they oversee

Every cell below counts the disclosed stock trades made by members of one congressional committee in one market sector. The squares ringed in gold and marked ▦ are jurisdictional overlaps — cases where a committee oversees the very sector its members were trading in.

Across these 14 committees and 10 sectors, members disclosed 25,567 equity trades. 1,657 of them — about 6% — fell in a sector the trading member's own committee oversees. Members of House Financial Services made 444 disclosed trades in Financial Services — a sector it oversees.

This is committee membership measured against disclosed sector — not proof of wrongdoing. A member may sit on a committee for reasons unrelated to a given trade, trades are often executed by a spouse or a blind manager, and the data lags the trade by weeks. Read these as questions worth asking, not findings. See our methodology and data dictionary.

Fewer trades More · ▦ committee oversees this sector

Disclosed congressional stock trades by committee (rows) and market sector (columns). Cells marked with a square denote sectors the committee oversees.
Committee	Technology	Financial Services	Healthcare	Consumer Cyclical	Industrials	Communication Services	Consumer Defensive	Energy	Basic Materials	Real Estate
House Financial Services	1,043	444	521	477	382	270	225	100	87	72
House Permanent Select Intelligence	772	333	387	321	337	203	140	74	59	25
House Armed Services	566	269	336	320	386	163	122	93	67	91
House Small Business	505	173	332	194	252	126	107	92	48	69
House Appropriations	332	258	211	248	233	92	152	85	77	75
House Foreign Affairs	433	224	244	271	196	120	111	50	57	34
House Agriculture	414	158	216	213	243	125	95	61	36	29
House Transportation and Infrastructure	392	170	232	156	198	119	100	74	52	32
House Oversight and Government Reform	293	200	111	183	163	118	124	182	66	62
Senate Veterans' Affairs	409	207	197	151	123	101	95	54	152	10
House Education and Workforce	238	174	159	103	154	73	154	195	81	72
Senate Agriculture	384	211	159	124	125	72	96	53	144	13
House Ways and Means	268	155	187	175	161	56	109	108	56	15
Senate Armed Services	334	178	170	121	114	76	84	45	153	16

How to read this

Rows are committees, columns are sectors. Each cell is the number of disclosed equity trades by members of that committee in that sector. A member who sits on three committees counts toward all three rows.
Darker gold means more trades. The scale is relative to the trades shown here, so a faint cell is light activity and a deep-gold cell is heavy activity.
The ▦ marker and gold ring flag a jurisdictional overlap — the committee oversees that sector. Those are the cells journalists tend to cite.
Blank cells mean no disclosed equity trades in that pairing within the dataset.

Rows show the 14 most active committees; columns show the 10 most-traded sectors. Non-equity holdings (funds, bonds, real estate without a sector) are excluded, and executive-branch filers carry no committee assignments, so this view is congressional only.

See how every flag is defined — and verify it against the original filings.

Read the methodology Data dictionary