Kiniksa Pharmaceuticals International, plc
$78.63+0.7%
+$288.3M
Net Activity
+7.79% total shares
Institutions Holding
270
Popularity Rank
#2331
Avg Weight
0.16%
Total Value
$3.1B
Market Cap
$6.2B
270 institutions currently hold KNSA, with 159 net buyers and 110 net sellers this quarter.
Institutional Moves (Q2 2026)
Majority Increased
Based on recent trading activity
Net Selling Institutions
110
Net Buying Institutions
159
Top 5 by Value
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Across its top 20 institutional holders, KNSA's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 8/100, avg. turnover score 42/100).
KNSA ranks #2331 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
KNSA is a top-conviction position for Spruce Street Capital LP — at 11.5% of their entire disclosed 13F portfolio, it's one of their largest single bets, not just a passing allocation.
The largest dollar stake in KNSA belongs to FMR LLC, but the position matters far more to Spruce Street Capital LP, who has 11.5% 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.
Fidelity has added to its KNSA position for two straight quarters, increasing it by $378.1M to reach $445.8M today.
Caption Management, LLC has trimmed its KNSA position for two straight quarters, cutting it by $40.7M while still holding $20.8M.
KNSA is up 0.7% today, and institutions have been net buyers of $288.3M this quarter — today's price move and the underlying institutional flow are pointing the same direction.
KNSA posted net income of $73.1M over the trailing twelve months, and currently trades at a P/E of 85.0.
+$560.7M
Total Buy Value
$451.4M
Total Sell Value
159
Net Buyers
110
Net Sellers
KNSA
Q2 2026
Top 5 Institutional Movers
KNSA 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.
2
Filings (90d)
$5.65M
Total Est. Value
71K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| Tessari Eben | 2026-07-29 | $5.35M |
| Cole G Bradley | 2026-07-29 | $299K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
1
Filings (14d)
Kiniksa Pharmaceuticals International (ticker: KNSA) issued a press release on July 28, 2026, announcing its financial results for the quarter ended June 30, 2026. The release is attached to this 8-K filing as Exhibit 99.1, though the filing itself doesn't contain any specific numbers or commentary beyond the news of the announcement.
View Full Filing (SEC EDGAR)G52694109, G5269C101
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,242
Total reported value
$2.2T
3229 13F institutions increased their position this quarter
Institutions Holding
5,990
Total reported value
$3.6T
3033 13F institutions increased their position this quarter
Institutions Holding
6,153
Total reported value
$1.8T
2971 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
4,583
Total reported value
$528.9B
Held by 4583 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,419
Total reported value
$354.5B
Held by 4419 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
4,323
Total reported value
$864.3B
Held by 4323 institutions — one of the most-tracked stocks on AlphaSMO
Access KNSA's institutional ownership data programmatically:
REST API
curl https://alphasmo.com/api/v1/market/stock/KNSACLI
npx alphasmo stocks get KNSA