Congressional Stock Trades & Disclosures
Cynthia M. Lummis is a U.S. Senator, a Republican representing WY. As of April 2025, Quantellect has tracked 5 disclosed stock trades across 3 companies, representing $9.1M in disclosed transaction value, each filed publicly under the STOCK Act.
About Cynthia M. Lummis's congressional trading
Cynthia Lummis has disclosed only five transactions since joining the Senate, and the pattern that stands out is not the securities market at all. Three of her five reported trades, all dated March 1, 2025, are purchases of interests in Wyoming-based business entities rather than publicly traded stock: Arp & Hammond Hardware Company, Lummis Livestock Company LLC, and Sweetgrass Land Co. LLC. Each is disclosed in the $1,000,001 to $5,000,000 range, attributed to Lummis herself, and reported on the same filing dated April 25, 2025.
That clustering matters for how investors should read this profile. Her disclosure record does not show frequent public-equity trading. It covers 2021 and 2025 only, with two purchases in 2021 and three in 2025, and every one of the five transactions is a purchase. There are no disclosed sales in the record at all.
A record built on Wyoming business interests, not a trading book
The 2025 activity is entirely local and entirely attributed to Lummis personally. Arp & Hammond Hardware Company is identified as a Cheyenne, Wyoming business entity with Real Estate as its description. Lummis Livestock Company LLC is described as running steers and selling grass-fed cattle. Sweetgrass Land Co. LLC is described as selling build-ready residential and commercial lots. None of the three carries a ticker, a sector classification, or an industry classification in the data, consistent with their nature as private business-entity interests rather than exchange-listed securities. Investors looking for a public-markets read-through from these three transactions will not find one: there is no company description, sector, or industry tag to place them against.
The two 2021 transactions are different in kind. On August 16, 2021, a purchase of $50,001 to $100,000 in Grayscale Bitcoin Mini Trust (BTC) was disclosed through the River exchange platform. On September 3, 2021, a purchase of $1,001 to $15,000 in Jacobs Solutions Inc. (ticker J) was disclosed. Jacobs Solutions is classified in the data under Industrials, specifically Construction & Engineering, and is described as a global infrastructure, consulting, and advanced-facilities firm operating project management, design, and engineering services across government, defense, energy, transport, and manufacturing clients worldwide.
Attribution on these two 2021 trades is listed as unknown in the source disclosure, meaning the filing does not identify whether the transaction was made personally, by a spouse, or through another arrangement. That distinguishes them from the three 2025 real-estate and livestock-business purchases, which are attributed to Lummis directly.
What the sector and frequency data actually show
Across all five disclosed transactions, four fall under a sector classification of Unknown in the underlying data: the three private business-entity transactions and the BTC transaction. One falls under Industrials via the Jacobs Solutions purchase. With only five total transactions on record, there is not enough disclosed activity to identify a recurring public-market sector preference. The two tickered transactions, BTC and J, each appear exactly once in the disclosure history.
Lummis does not currently carry a published Quantellect Score. At the latest published score date of August 21, 2026, 76 members had a score, including 73 sitting members. Separately, population data measured August 22, 2026 lists 537 sitting members, and 39 of the 100 sitting senators had zero disclosed trades. Lummis’s limited five-transaction record offers a relatively small activity sample, and the absence of a score reflects that no score row has been generated for her at this scoring date rather than any judgment on the underlying trades.
For investors, the practical takeaway is narrow. Lummis’s disclosure record does not offer a pattern of public-equity trading to study. What it does show is a senator whose reportable financial activity in the most recent filing cycle centered on Wyoming real estate, cattle ranching, and land-development interests tied to her home state, alongside two earlier, smaller disclosures in bitcoin exposure and an infrastructure-engineering stock where the personal-versus-other attribution is not specified by the source filing.
Disclosure and methodology notes
- Financial disclosures are filed under the Stop Trading on Congressional Knowledge Act of 2012, which sets reporting requirements for members of Congress.
- Filing guidance is maintained by the Senate Select Committee on Ethics.
- Source filings referenced in this profile: Official financial disclosure filing.
- Disclosed amounts are reported as ranges required by law, not exact figures. Attribution follows the source filing: transactions marked Self are attributed to the senator directly; those marked Unknown are not attributed to any individual because the source filing does not specify.
- This profile reflects only what has been disclosed under applicable law and does not represent a complete accounting of any individual’s or entity’s financial activity.
Trading activity
Estimated trading profits
No priced buy disclosures in this window.
No priced buy disclosures in this window.
Based on 1 of 2 disclosed buys with pricing coverage.
Aug 16, 2021 to Aug 25, 2026
Estimated unrealized profit is based on disclosed buy transactions, estimated trade price, and the latest priced-through date. It does not account for later sales, taxes, commissions, slippage, exact execution price, or full portfolio position size. This is descriptive research, not investment advice, and not an allegation of wrongdoing.
Where the Money Sits
share of disclosed trades · top sectors
Periodic Transaction Report filings
| Company | Type | Size | Traded | Est. price | Change |
|---|---|---|---|---|---|
Business Entity Company: Sweetgrass Land Co. LLC (Cheyenne, Wyoming) Description: The sale of build-ready residential and commercial lots. | Buy | $1,000,001 - $5,000,000 | 01 MAR 2025 | — | — |
Business Entity Company: Lummis Livestock Company LLC (Cheyenne, Wyoming) Description: Runs steers and sells grass fed cattle. | Buy | $1,000,001 - $5,000,000 | 01 MAR 2025 | — | — |
Business Entity Company: Arp & Hammond Hardware Company (Cheyenne, Wyoming) Description: Real Estate | Buy | $1,000,001 - $5,000,000 | 01 MAR 2025 | — | — |
 JJacobs Solutions Inc. | Buy | $1,001 - $15,000 | 03 SEP 2021 | $107.89 | +39.84% |
 BTCGrayscale Bitcoin Mini Trust | Buy | $50,001 - $100,000 | 16 AUG 2021 | — | — |
Congressional trading news
The latest news on congressional stock trading, across all members, will appear here as our newsroom publishes it.
Cynthia M. Lummis congressional trading FAQ
Can Cynthia M. Lummis legally trade stocks?
Yes. Members of Congress are permitted to buy and sell stocks, but the 2012 STOCK Act requires them to publicly disclose each transaction, generally within 45 days. Quantellect compiles Cynthia M. Lummis's disclosures so the public can review them.
Where does Quantellect get Cynthia M. Lummis's trading data?
Every trade shown is sourced from official Periodic Transaction Reports filed under the STOCK Act. Amounts are reported as ranges, and estimated prices and post-trade returns are derived from end-of-day market data.
How can I track Cynthia M. Lummis's stock trades?
Quantellect tracks every stock trade Cynthia M. Lummis discloses under the STOCK Act on this page, including the company, the disclosed amount range, and post-trade performance. New filings appear here as they are reported, generally within 45 days of the trade.
How many stock trades has Cynthia M. Lummis disclosed?
Quantellect has tracked 5 disclosed trades by Cynthia M. Lummis across 3 companies.
Which stocks does Cynthia M. Lummis trade most?
Cynthia M. Lummis's most frequently disclosed positions are BTC (1 disclosed trade) and J (1 disclosed trade). The full list of companies and individual filings is shown on this page.
What was Cynthia M. Lummis's most recent stock trade?
Cynthia M. Lummis most recently bought Business Entity Company: Sweetgrass Land Co. LLC (Cheyenne, Wyoming) Description: The sale of build-ready residential and commercial lots. in March 2025, according to public STOCK Act filings tracked by Quantellect.
What is Cynthia M. Lummis's Quantellect Score?
Cynthia M. Lummis has a directory baseline value of 10, not a measured Quantellect Score. 3 disclosed purchase(s) were found in the trailing 24 months, but none had a publishable ticker that could be priced. Baseline 10 is a directory value, not a measured Q Score, and is excluded from ranking and percentile calculations.
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Trades reflect disclosures filed under the STOCK Act and are provided for informational purposes only, not investment advice. Amounts are ranges from official filings; estimated prices and post-trade returns are derived from end-of-day market data and may be revised as filings are amended.