# Obsidian Therapeutics, Inc. Common Stock (OBX)

> Obsidian Therapeutics, Inc. Common Stock (OBX) trades at $12.56 (+0.64%) as of 7:30:01 PM EST on Nov 13, 2026, +2.95% over the past month. Market cap is $775.88M, with 3.9 days to cover in short interest.

Canonical: https://massive.com/quote/obx
Data as of: 2026-11-14T00:30:01.584Z (15-minute delayed)
Source: Massive (https://massive.com/docs/llms.txt)

## Price

**$12.56** +0.08 (+0.64%)
As of 7:30:01 PM EST on Nov 13, 2026 · 15-minute delayed
Nasdaq · usd

## Stock performance

How Obsidian Therapeutics, Inc. Common Stock (OBX) stock has performed from one day to one year, with its 52-week range.

| Period | Return |
| --- | --- |
| 1D | +0.64% |
| 1W | -9.41% |
| 1M | +2.95% |
| YTD | -63.06% |
| 1Y | -63.06% |
| 52-wk range | $9.60 – $49.97 |

From daily closes through Nov 13, 2026.

## Key statistics

Today's trading snapshot for OBX: day range, open, previous close, volume and market cap.

| Measure | Value |
| --- | --- |
| Day range | $11.80 – $13.00 |
| Open | $12.37 |
| Prev close | $12.48 |
| Volume | 314.04K |
| Market cap | $775.88M |
| Shares out | 61.77M |

## Insider trading

[Obsidian Therapeutics, Inc. Common Stock (OBX) insider trading](https://massive.com/quote/obx/insider-trading.md): open-market Form 4 buys and sells by Obsidian Therapeutics, Inc. Common Stock insiders over the last 12 months.

## 8-K filings

Material corporate events Obsidian Therapeutics, Inc. Common Stock has disclosed to the SEC on Form 8-K.

- Nov 12, 2026 · [Quarterly earnings](https://massive.com/quote/sec-filings/8-k/earnings-releases.md)
  “On November 12, 2026, Obsidian Therapeutics, Inc. (the "Company") issued a press release reporting its financial results for the quarter ended September 30, 2026.”

## OBX short interest

How heavily OBX is shorted: shares short, days to cover and average daily volume.

| Measure | Value |
| --- | --- |
| Days to cover | 3.9 |
| Short interest | 1.18M |
| Avg volume | 300.55K |

As of Oct 30, 2026 · reported to FINRA twice monthly.

## About Obsidian Therapeutics, Inc. Common Stock

Obsidian Therapeutics Inc is a clinical-stage biopharmaceutical company harnessing novel protein-regulation technology to develop engineered tumor infiltrating lymphocytes (TIL) cell therapies for the treatment of patients with solid tumors. The company's proprietary cytoDRiVE platform is versatile and allows it to leverage drug responsive domains to control protein function, with its initial focus on TIL cell therapies developed from this platform (cytoTILs). The company's flagship product candidate, OBX-115, is a novel, genetically engineered, autologous TIL cell therapy currently in a Phase 2 clinical trial for the treatment of melanoma and a Phase 1 clinical trial for the treatment of non-small cell lung cancer.

| Measure | Value |
| --- | --- |
| Exchange | Nasdaq |
| Market | stocks |
| Type | CS |
| Currency | USD |
| Industry | PHARMACEUTICAL PREPARATIONS |
| Listed | Aug 4, 2026 |

[Company website](https://www.obsidiantx.com)

## FAQ

### What is the Obsidian Therapeutics, Inc. Common Stock (OBX) stock price today?

Obsidian Therapeutics, Inc. Common Stock (OBX) is trading at $12.56 (+0.64% on the day) as of 7:30:01 PM EST on Nov 13, 2026. Prices are delayed at least 15 minutes; real-time quotes are available from the Massive API.

### What is Obsidian Therapeutics, Inc. Common Stock?

Obsidian Therapeutics Inc is a clinical-stage biopharmaceutical company harnessing novel protein-regulation technology to develop engineered tumor infiltrating lymphocytes (TIL) cell therapies for the treatment of patients with solid tumors.

### What is the short interest in OBX?

As of Oct 30, 2026, OBX has 1.18M shares short and 3.9 days to cover.

### What exchange is OBX listed on?

Obsidian Therapeutics, Inc. Common Stock (OBX) trades on Nasdaq in USD, in the PHARMACEUTICAL PREPARATIONS industry.

## Live data

Prices here are 15-minute delayed. For real-time OBX quotes and the full history behind this page, use the Massive API or MCP server:

- `GET https://api.massive.com/v3/snapshot?ticker.any_of=OBX`

Requests need a Massive API key. API reference for agents: https://massive.com/docs/llms.txt. Connect an AI agent through the Massive MCP server: https://massive.com/docs/ai-tools.

## Related

- [Obsidian Therapeutics, Inc. Common Stock (OBX) insider trading](https://massive.com/quote/obx/insider-trading.md)
- [SEC 8-K events](https://massive.com/quote/sec-filings/8-k.md)
- [Markets overview](https://massive.com/quote/index.md)

Nothing here is investment advice. Data and content are provided for informational purposes under the Massive Terms of Service: https://massive.com/terms