# Assembly Biosciences share price today (Assembly Biosciences, Inc., ASMB)

> Assembly Biosciences, Inc.'s share price, valuation and earnings point in different directions. The next one or two quarters should make it clearer. ASMB · Healthcare · Biotechnology · data as of 4 November 2026. Page: https://www.sectoralpha.in/us/stocks/asmb

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## Key numbers

- Price: $19.87 (−36.3% in a year)
- Revenue (Jun 2026): $13.4 M (+38.9% on a year ago)
- Profit (Jun 2026): −$3.9 M
- Operating margin: −47.4% (+67.8 points on a year ago)
- ROE: −3%, FY25
- ROIC: −3.3%, against a 10.9% cost of capital: −14.2 points

Biggest thing to watch: the price is not yet in a clear uptrend, so timing is the risk more than the business. ## What is the Assembly Biosciences share price today? Assembly Biosciences, Inc.'s share price was $19.87 at the close on 4 November 2026. That is 26.6% below its average price over the last 200 trading days. In the last 52 weeks it traded between $20 and $39, and at that close it was at the low of that range. Over the past 13 weeks it has done worse than the S&P 500, and it has been behind for 7 weeks running. Over the last 1 year the share price moved +6% while the S&P 500 moved +18%, so it is behind the index over that whole period. It was last ahead over 13 weeks in the week of 18 September 2026. The chart above shows the 13-week comparison for every week. This page treats a rise as over when the price closes below its 200-day average on two Fridays in a row. ## What dividend does Assembly Biosciences pay? Assembly Biosciences, Inc. pays no dividend. In the last 12 reported quarters it declared no dividend per share, so there is no payout history to chart and no yield to show. Companies like this usually keep their earnings in the business, so the cash-flow sections show where that cash goes. ## Which stock lists is Assembly Biosciences on? Assembly Biosciences is not in the Nasdaq 100, the S&P 500 or the Dow Jones 30, and is not on the US tech stocks list. ## Is Assembly Biosciences profitable? Assembly Biosciences, Inc. posted a net loss of $3.9 M in the Jun 2026 quarter. The full FY25 year was a loss of $6.1 M. That loss is 28.8% of the quarter's revenue. The same quarter a year earlier lost $10.2 M. 11 of the last 12 reported quarters were loss-making. ## How much revenue does Assembly Biosciences make, and is it growing? Assembly Biosciences, Inc. reported $13.4 M of revenue in the Jun 2026 quarter, +38.9% on the same quarter a year earlier. Over 4 years it has grown 84.4% a year on average. The last full year, FY25, came in at $72.3 M. The last four reported quarters add to $74.8 M. FY25 revenue was $72.3 M, +153.5% on the year before. Recent pace: the last four quarters grew +140.3% on average, against 84.4% a year over the longer run, so this year is growing faster than its own long-run rate. Is growth speeding up? Revenue over the last 12 months grew +125.1%, against +64.3% a year over the last 8 quarters (accelerating). ## How much of every $100 of sales does Assembly Biosciences keep? Assembly Biosciences, Inc.'s operating margin was −47.4% in the Jun 2026 quarter, 67.8 percentage points higher than the same quarter a year ago. Across 4 years it has been between −1,477.4% and −16.8%. The latest quarter is within that range. Why the margin moved: operating margin changed +67.8 percentage points on the year while gross margin changed +56.0 points. So the gain came mostly from the gross margin, which means input costs and prices charged. ## Is Assembly Biosciences' profit turning into cash? Assembly Biosciences, Inc.'s cash-flow history is too short to judge how much of its profit turns into cash. In FY25 its operations used $41.1 M of cash, against −$6.1 M of profit. After $66.0 K of spending on assets, free cash was −$41.2 M: it spent more than its operations brought in. Cash-flow figures here are yearly, because quarterly cash statements are not published, so this section changes once a year. What to look at next: the main use of cash is spending on assets. The next section checks what that spending is building. ## Where does Assembly Biosciences' cash go? Assembly Biosciences, Inc. does not report the customer, stock and supplier day counts a cash cycle needs, so this section looks at its spending on assets instead. It spent $349 K on assets over the last 3 years. Averaged over those years that is 0.2% of FY25 revenue a year. Nothing is estimated in place of the missing day counts, so no cash-cycle chart is drawn. Spending on assets: $349 K over the last 3 years. In short: most of the cash goes on covering the loss, not on new assets; spending on assets is small next to it. ## What is Assembly Biosciences' P/E ratio, and how does it compare with its own history? Assembly Biosciences, Inc. has no P/E right now, because its earnings are negative. The revenue and margin sections are where a turn would show first. Measured against sales instead, the market values Assembly Biosciences, Inc. at 5.6× its FY25 revenue of $72.3 M. The P/E comes back here once profit turns positive. ## Is the Assembly Biosciences business getting better or worse? Assembly Biosciences, Inc.'s business trend cannot be read yet. There are fewer than eight usable quarters of growth figures, so there is not enough history to read the trend. This is based on 7 quarters of 1 measure, with some gaps. Why it matters: with too little history, we say so rather than guess a direction. One or more growth lines have an extreme jump caused by comparing with a near-zero or loss-making quarter. Those jumps are capped before reading and drawn at the edge of the chart, so one odd quarter does not decide the result. The return figures here are yearly, not quarterly. They show level and direction only; they can support the growth lines but never decide the reading alone. There are fewer than eight usable quarters, so this page does not guess a direction from so little history. ## How much does Assembly Biosciences earn on its capital? Assembly Biosciences, Inc. earned a ROE of −3% in FY25. That is up from a low of −149% in FY23. Its return on capital used (ROIC) is 14.2 percentage points below its cost of capital, so growth here does not yet pay for the capital it uses. It comes from a −8.5% net margin and 0.28× asset turnover (sales divided by assets). Why the return is what it is (FY25): a −8.5% net margin × 0.28× asset turnover × 1.25× leverage (assets divided by equity) ≈ −3.0% on equity. The margin does its share; borrowing plays a small part, so this return is earned, not borrowed. The key test, return on capital used minus the cost of capital: −3.3% − 10.9% = −14.2 percentage points. The 10.9% is an estimate of this company's own cost of capital. Read the sign and size of the gap, not the decimals. Negative: growth at these returns loses value until returns improve. ## Does Assembly Biosciences have too much debt? Assembly Biosciences, Inc. has total debt of $2.4 M against shareholder equity of $306 M as of Jun 2026, so its debt is 0.01× its equity, which is very little. Year by year, that ratio went from 0.04 in FY21 to 0.01 in FY25. So the returns on this page come from the business, not from borrowed money. ## What is the Assembly Biosciences shareholding pattern? 31.9% of Assembly Biosciences, Inc.'s tradable shares are in short positions, which are bets that the price will fall, so a large group of traders is betting against it. At normal trading volumes, closing those positions would take about 8.3 days. US companies do not publish a quarter-by-quarter list of owners, so this page uses short interest instead. It is a single reading at one point in time; we do not have its history. Why it is at this level: the figure does not say who holds the short positions or why, so we show the level without guessing the story. ## How far is Assembly Biosciences from balance-sheet trouble? For Assembly Biosciences, Inc., the Z-score is 7.79. A Z-score above about 3 is safe and below about 1.8 signals danger, so this is well clear of danger. It estimates how far the balance sheet is from trouble; it is not a forecast of failure. Why it matters: a Z-score of 7.79 is well clear of the danger zone, so the balance sheet is not the risk here. ## How does Assembly Biosciences rank in its industry? There is no score against its industry: Assembly Biosciences, Inc. is not among the largest members shown in this industry comparison for Biotechnology. The score ranks a company within its industry: each measure is scored against the other members. Without that group there is no score, so none is shown. ## Which companies is Assembly Biosciences compared with? No sector comparison is shown here, not among the largest members shown in this industry comparison. ## Which companies are close to Assembly Biosciences in size? Assembly Biosciences is the 156th largest of 211 Biotechnology companies on Sector Alpha by market value (scores of 5 November 2026). Just above it: Editas Medicine, Inc., Altimmune, Inc. and Allogene Therapeutics, Inc. Just below it: C4 Therapeutics, Inc., Avalo Therapeutics, Inc. and Lyell Immunopharma, Inc. ### Biotechnology companies close in size

1. [Editas Medicine, Inc.](https://www.sectoralpha.in/us/stocks/edit) $418 million
2. [Altimmune, Inc.](https://www.sectoralpha.in/us/stocks/alt) $412 million
3. [Allogene Therapeutics, Inc.](https://www.sectoralpha.in/us/stocks/allo) $411 million
4. Assembly Biosciences, Inc. $405 million
5. [C4 Therapeutics, Inc.](https://www.sectoralpha.in/us/stocks/cccc) $384 million
6. [Avalo Therapeutics, Inc.](https://www.sectoralpha.in/us/stocks/avtx) $379 million
7. [Lyell Immunopharma, Inc.](https://www.sectoralpha.in/us/stocks/lyel) $378 million

[All 211 Biotechnology companies, largest first](https://www.sectoralpha.in/us/sectors/biotechnology#all-companies)

### Companies close in size in other industries

1. [Citizens Financial Services, Inc.](https://www.sectoralpha.in/us/stocks/czfs) $407 million · Banks - Regional
2. [Intrepid Potash, Inc.](https://www.sectoralpha.in/us/stocks/ipi) $407 million · Agricultural Inputs
3. Assembly Biosciences, Inc. $406 million
4. [Kamada Ltd.](https://www.sectoralpha.in/us/stocks/kmda) $405 million · Drug Manufacturers - Specialty & Generic
5. [LendingTree, Inc.](https://www.sectoralpha.in/us/stocks/tree) $405 million · Financial Conglomerates

## What else do people ask about Assembly Biosciences? ### What were Assembly Biosciences's latest quarterly results? Assembly Biosciences, Inc. reported revenue of $13.4 M and a net loss of $3.9 M for the Jun 2026 quarter. Earnings per share were −$0.20. The operating margin was −47.4%, 67.8 percentage points higher than a year earlier (as of 4 November 2026). ### What is Assembly Biosciences's market cap? Assembly Biosciences, Inc.'s market capitalisation is $405 M at a stock price of $19.87. Market cap is the share price times the number of shares, so it changes whenever the price moves (as of 4 November 2026). ### How is Assembly Biosciences performing? Assembly Biosciences, Inc.'s latest readings are below. Over the past 13 weeks it has done worse than the S&P 500, for 7 weeks running. This describes what the data did, not a rating (as of 4 November 2026). ### Will Assembly Biosciences's stock price go up? This page does not forecast Assembly Biosciences, Inc.'s stock price. What it shows instead: the stock price is $19.87. Nobody can reliably say which way a price will move, and this site does not try (as of 4 November 2026). ### Where is Assembly Biosciences in its business cycle? Assembly Biosciences, Inc.'s FY25 operating margin was −16.8%, against a 4-year range of −1,477.4% to −16.8%: the middle of its own range, neither a peak nor a low. The latest quarter was −47.4%. Comparing margins with a company's own long history is a good way to see where it is in its cycle (as of 4 November 2026). ### What could break the Assembly Biosciences story? Biggest thing to watch: the price is not yet in a clear uptrend, so timing is the risk more than the business. On price, this page treats a rise as over when the share price closes below its 200-day average on two Fridays in a row (as of 4 November 2026). ### Is Assembly Biosciences a stock worth studying right now? What the numbers show: Assembly Biosciences, Inc.'s share price, valuation and earnings point in different directions. The next one or two quarters should make it clearer. The main open question: the next one or two quarters of results. Every number on this page is worked out by code from the published figures, with no forecasts and no price opinions (as of 4 November 2026). This is research, not advice. We’re not SEBI-registered.