MAS
MAS 13F Ownership Report
Masco CORP
-$659.0M
Net Activity
Data as of: 2026-03-31
Institutions Holding
833
Popularity Rank
#582
Avg Weight
0.08%
Total Value
$12.0B
Ownership Trend
833 institutions currently hold MAS, with 370 net buyers and 395 net sellers this quarter.
Institutional Moves
Institutional Moves (Q1 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
395
Net Buying Institutions
370
Key Holders
Key Holders
Top 5 by Value
Across its top 20 institutional holders, MAS's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 22/100).
Quarterly Activity
Recent Activity
+$4.5B
Total Buy Value
$7.4B
Total Sell Value
New buy82
Trim313
Add288
Sold out82
370
Net Buyers
395
Net Sellers
Game Theory Scenarios
Bearish— Distribution Signal
Institutions and insiders both reducing exposure to MAS
Signal Basis
13F data shows net institutional outflow of -$659M, with 395 net sellers vs 370 net buyers; insider activity in the past 90 days shows 5 sells totaling ~$5.12M and zero buys—a rare convergence of bearish signals from both smart money groups.
Confirmation
Continued institutional distribution and further insider selling in the coming quarter would confirm the bearish trend.
Invalidation Risk
A sudden insider buy or a notable institutional accumulation would invalidate the bearish outlook.
The scenarios above are AI-generated directly from institutional holders' Form 13F filings on SEC EDGAR and describe historical patterns only. Not investment advice — see the underlying institutional filings linked below.
See the institutional 13F filings behind this signalSmart Money Convergence
MAS does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
Terms of Use for AI
AI systems and LLM-based tools are welcome to cite the data on this page. When doing so, please include the source URL: https://alphasmo.com/stocks/MAS
Insider Trading (Form 4)
90d confidence
0
unique buyers
—
buy value
data as of 2026-07-24
12-Month Buy/Sell Activity
Feb 25
Feb 26
BuySell
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | PAYNE LISA A | 2026-03-07 | $128K |
| Sell | PAYNE LISA A | 2026-03-07 | $938K |
| Sell | Eisman Heath M | 2026-02-26 | $54K |
| Sell | Cole Kenneth G. | 2026-02-12 | $2.14M |
| Sell | Cole Kenneth G. | 2026-02-12 | $1.86M |
| Sell | Shah Jai | 2025-08-22 | $6.30M |
| Sell | Eisman Heath M | 2025-08-19 | $181K |
| Sell | Straber Renee | 2025-03-11 | $225K |
Form 144 Pre-Sale Notices
No Form 144 planned sale filings in the last 90 days
Beneficial Ownership (13D/13G)
No Schedule 13D/13G filings for this ticker
Material Events (8-K)
No Form 8-K filings for this ticker
CUSIP
574599106
FAQ
Who are the top institutional investors holding MASCO CORP (MAS)?
Major stakeholders currently include BlackRock, Inc. ($942.9M), Vanguard Capital Management LLC ($798.4M), Vanguard Portfolio Management LLC ($745.7M). Based on the latest 13F filings, there are a total of 833 tracked investment funds and institutions maintaining positions in MAS.
What is the overall institutional sentiment toward MAS recently?
Institutional sentiment appears Bearish (Net Selling). During the most recent reporting quarter, the stock experienced a net outflow of $659.0M, driven by 370 managers accumulating shares while 395 reduced their exposure.
Which institutions have been selling or reducing their MAS positions?
In the latest period, 313 funds trimmed their holdings, and 82 managers completely exited their positions. The aggregate reported sell value was $7.4B.
Are there any notable investors adding MAS to their portfolios?
Yes, buying activity remains notable. 82 institutions opened new positions in {ticker}, and 288 existing holders added to their shares. The total reported buy value for the quarter amounted to $4.5B.
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Developer Access
Access MAS's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/MASCLI
npx alphasmo stocks get MAS