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P

Protagenic Therapeutics PTIX · USD

Health Care · US listing · 🇺🇸 United States

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0.54

+0.52%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
Armen (Garo H.)52.7k13.74%—30 Nov 2025
DRW Securities, LLC42.9k11.17%+6.6k31 Dec 2025
FNY Investment Advisers LLC25k6.51%+7.5k31 Dec 2025
Citadel Advisors LLC23.3k6.07%+23.3k31 Dec 2025
Geode Capital Management, L.L.C.12.2k3.17%+12.2k31 Dec 2025
Barrage (Khalil Z)10.8k2.81%—30 Nov 2025
Raymond James & Associates, Inc.10k2.61%+10k31 Dec 2025
Arrow (Alexander K)3.3k0.85%—30 Nov 2025
Tower Research Capital LLC3k0.79%+1.8k31 Dec 2025
Lovejoy (David A)2.7k0.69%—30 Nov 2025
Osaic Holdings, Inc.490.01%+4931 Dec 2025
BofA Global Research (US)170.00%+931 Dec 2025
United Financial Planning Group LLC170.00%—31 Dec 2025
Morgan Stanley Smith Barney LLC20.00%−15k31 Dec 2025
Carson Wealth Management Group10.00%—31 Dec 2025

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

12.9k

-0.2% on the period before. 5.9 days to cover.

Short volume

Share of the day's trading sold short, 2 Jan 2026

78.8%

Last 51 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 1 Sept 20263,176 shares

Sources and methodology

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Our data supplier
Chart on the Overview
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Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.