Phathom Pharmaceuticals Inc
$9.57+4.2%
+$58.1M
Net Activity
+5.32% total shares
Institutions Holding
165
Popularity Rank
#3466
Avg Weight
0.43%
Total Value
$845.6M
Market Cap
$697.8M
165 institutions currently hold PHAT, with 86 net buyers and 81 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
81
Net Buying Institutions
86
Top 5 by Value
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Across its top 20 institutional holders, PHAT's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 24/100, avg. turnover score 36/100).
PHAT ranks #3466 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
PHAT is a top-conviction position for Medicxi Ventures Management — at 45.6% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in PHAT belongs to Frazier Life Sciences Management, L.P., but the position matters far more to Medicxi Ventures Management, who has 45.6% of their own portfolio riding on it — a reminder that the biggest holder by size and the holder with the biggest bet aren't always the same fund.
Goldman Sachs Group Inc has added to its PHAT position for two straight quarters, increasing it by $12.8M to reach $19.3M today.
Frazier Life Sciences Management, L.P. has trimmed its PHAT position for two straight quarters, cutting it by $71.6M while still holding $135.3M.
PHAT is up 4.2% today, and institutions have been net buyers of $58.1M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
PHAT reported a net loss of $99.1M over the trailing twelve months.
+$189.9M
Total Buy Value
$55.6M
Total Sell Value
86
Net Buyers
81
Net Sellers
PHAT
Q2 2026
Top 5 Institutional Movers
+$12.3M
+$11.1M
+$10.3M
-$8.1M
PHAT does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
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.
No Form 144 planned sale filings in the last 90 days
0
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Millennium Management LLC | 13G/A | 2026-07-20 | 4.2% |
1
Filings (14d)
This is an 8-K from Phathom Pharmaceuticals, filed July 30, 2026, announcing the company's Q2 2026 earnings via press release. The press release is attached as Exhibit 99.1, but under the rules it is "furnished" rather than "filed." The excerpt doesn't include the actual financial numbers, just the announcement itself.
View Full Filing (SEC EDGAR)71722W107
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,239
Total reported value
$2.2T
3224 13F institutions increased their position this quarter
Institutions Holding
5,987
Total reported value
$3.6T
3028 13F institutions increased their position this quarter
Institutions Holding
6,149
Total reported value
$1.8T
2966 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,760
Total reported value
$1.2T
Held by 4760 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,688
Total reported value
$473.3B
Held by 4688 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,634
Total reported value
$985.5B
Held by 4634 institutions — one of the most-tracked stocks on AlphaSMO
Access PHAT's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/PHATCLI
npx alphasmo stocks get PHAT