XORTX Therapeutics Inc.
XORTX Therapeutics Inc. (XRTX) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · XRTX · as of Sep 30, 2025
Ownership Breakdown
5
Institutional Holders
▼ 2 vs Q2
$81,474
Total Inst. Value
▲ $19,982 vs Q2
278,489
Shares Outstanding
freeFloat 89.78%
100,658
13F Shares Held
▲ 34,873 vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
XRTX largest shareholders · institutional ownership
Q3 2025 · SEC 13F
Showing top 9 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
CITADEL ADVISORS LLC pharmaceutical preparations | 86.3K | 1.24% | 1.24% | $69.87M | Nov 14, 2025 | ▲ 47.9K |
XTX TOPCO LTD pharmaceutical preparations | 13.8K | 19.85% | 19.85% | $11.19M | Nov 14, 2025 | NEW |
CLEARSTEAD ADVISORS, LLC pharmaceutical preparations | 277 | 0.40% | 0.40% | $225,000 | Nov 10, 2025 | — held |
UBS GROUP AG pharmaceutical preparations | 234 | 0.34% | 0.34% | $190,000 | Nov 13, 2025 | ▼ 20.6K |
SBI SECURITIES CO., LTD. pharmaceutical preparations | 1 | 0.00% | 0.00% | $1,000 | Nov 5, 2025 | NEW |
ROYAL BANK OF CANADA pharmaceutical preparations | 0 | 0.00% | 0.00% | $0 | Nov 14, 2025 | EXIT |
ADVISOR GROUP HOLDINGS, INC. pharmaceutical preparations | 0 | 0.00% | 0.00% | $0 | Nov 14, 2025 | EXIT |
NATIONAL BANK OF CANADA /FI/ pharmaceutical preparations | 0 | 0.00% | 0.00% | $0 | Nov 14, 2025 | EXIT |
RAYMOND JAMES FINANCIAL INC pharmaceutical preparations | 0 | 0.00% | 0.00% | $0 | Nov 14, 2025 | EXIT |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2025 vs prior quarter
Q3 2025
1
Increased
+47.9K shares2
New Positions
first time holders1
Decreased
−20.6K shares4
Sold Out
fully exitedNet shares change (top 50)
+27.3K
+47.9K / −20.6K
Net new holders
-2
2 new / 4 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
XRTX insider trading · insider activity
Source: SEC Form 4
Recent Insider Transactions
Showing 10 most recent · Common Stock only
No recent insider transactions reported.
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
XORTX Therapeutics Inc. (XRTX) is primarily owned by institutional investors, who hold approximately 36.1% of total shares outstanding. Company insiders own approximately 10.22%, while retail and public investors account for the remaining 53.63%.
The largest institutional shareholder of XORTX Therapeutics Inc. is CITADEL ADVISORS LLC, holding approximately 86,326 shares — equal to 1.24% of outstanding shares — as of September 30, 2025.
A total of 5 institutional investors currently hold XRTX stock, with a combined institutional value of approximately $81,474 as of the most recent 13F filing period.
Frequently asked questions
XRTX ownershipXORTX Therapeutics Inc. (XRTX) is primarily owned by institutional investors, who hold approximately 36.1% of shares. The largest shareholder is CITADEL ADVISORS LLC with a 1.24% stake. Company insiders hold 10.22%. Data sourced from SEC Form 13F as of September 30, 2025.