Boundless Bio, Inc. entered a material agreement
SEC 8-KRead source ↗
Boundless Bio, Inc. is a US-listed company in the biotechnology industry. Its financial year ends in December.
Who’s trading
What company insiders, investment funds and members of Congress have been doing with the stock, from their own filings.
- Insiders1 buying, 3 selling30 purchases and 3 sales by directors and officers, last 12 monthsInsider trades
- Funds23 adding, 17 cuttingOf 12 active managers that changed their stake, 8 added; quarter to June 30, 2026Fund buyers and sellers
The Fundamentalytics view
Current signal Results well short of expectations: Reported earnings per share missed the analysts' consensus estimate by 83% in the quarter to 2026-06-30.
Assembled from SEC-filed figures — the full workings are on this page and in our methodology. Observations, not recommendations.
Highlights
How we pick theseStrengths
Nothing in Boundless Bio, Inc.'s latest figures clears our strength thresholds.
Things to watch
- Volatile shares. Over the past year the shares showed annualised volatility of 99% and a beta of -0.1 against the S&P 500.
- Missing expectations. Earnings per share fell short of the consensus estimate in 4 of the last four quarters.
Latest results
- Earnings per share
- -$1.06 against an average estimate of -$0.58: missed by 82.8%
- Share reaction
- +1.3% in the first session after the results on May 8, 2026, against +1.1% for the S&P 500
Price chart
- 1 day-1.2%
- 1 week+1.2%
- 1 month-6.9%
- This year+103.3%
- 1 year+74.3%
- S&P 500 this year+11.2%
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Third-party market data · may be delayed
At a glance
Profitability
- EPS (TTM, diluted)
- $-2.86
Growth
- Share count change
- +0.4%
Earnings
- Last results
- May 8, 2026
News & updates
Company announcements, filed results and changes that matter to shareholders.
- Agreement
No model value for Boundless Bio, Inc. at the moment. Current status: limited reported history: available models are shown without a Buy/Hold/Sell rating. Available reported financials are shown below.
Valuation models
We value Boundless Bio, Inc. as an operating company, with every model that fits that kind of business. Cost of equity 10.6%: the 10-year Treasury yield (4.9%) plus a beta of 1.27 times a 4.5% equity risk premium.
| Model | Value per share | In the combined value? |
|---|---|---|
| Price-to-earnings vs peers Earnings per share times peers' typical (harmonic-mean) price-to-earnings. | — | Does not apply: no positive earnings in the latest twelve months |
| Residual income Book value plus the present value of returns above the cost of equity, fading over ten years. | — | Does not apply: the model gives no positive value |
| Justified price-to-book Book value times (return on equity - growth) / (cost of equity - growth): steady-state returns. | — | Does not apply: return on equity is not positive |
| Revenue-to-maturity model Revenue grown to maturity with the cash margin moving to the industry's; for companies not yet profitable. | — | Does not apply: revenue and margins don't support a positive value |
| Price-to-sales vs peers Sales per share times peers' typical price-to-sales; used only when earnings are negative. | — | Does not apply: no positive revenue in the latest twelve months |
| Combined value Weighted average of the models that apply: the primary model (price-to-earnings vs peers) counts double. Models more than 5x or less than 0.2x the share price, or more than 3x away from the other models' median, are left out. | — | No model applies: the filings don’t yet support a value. |
Different models fail in different ways, so where several apply we average them rather than trust one. Peer-based models compare Boundless Bio, Inc. with Biotechnology in our coverage, using third-party market data. Model values are estimates under stated assumptions, updated as new filings arrive; not price targets or investment advice. How each model works.
Moat
Not assessed: fewer than five years of comparable figures in the filings. AI disruption exposure for this industry: Medium.
Forecasts and guidance
Analysts' consensus
| Fiscal year | EPS | Growth | Revenue | Growth |
|---|---|---|---|---|
| Current | −$2.53 | +3% | — | 0% |
| Next | −$0.98 | +61% | — | 0% |
How the EPS forecast has moved
The consensus EPS forecast for the current fiscal year is +8.4% on 90 days ago. In the last 30 days, 1 analyst raised Boundless Bio, Inc.'s forecast and 1 cut it.
Average of analysts' published estimates (third-party data).
View chart data
| Period | Current fiscal year | Next fiscal year |
|---|---|---|
| 90 days ago | −$2.33 | −$1.28 |
| 60 days ago | −$2.38 | −$1.28 |
| 30 days ago | −$2.40 | −$0.93 |
| 7 days ago | −$2.40 | −$0.93 |
| Now | −$2.53 | −$0.98 |
Earnings against estimates
| Quarter to | Estimate | Actual | Surprise |
|---|---|---|---|
| Jun 2026 | −$0.58 | −$1.06 | −82.8% |
| Mar 2026 | −$0.56 | −$0.60 | −7.1% |
| Dec 2025 | −$0.52 | −$0.58 | −11.5% |
| Sept 2025 | −$0.58 | −$0.62 | −6.4% |
Adjusted EPS as companies report it, against the average analyst estimate.
Positioning
- Short interest
- 5.6% of tradable shares
- Days to cover
- 4.53 at average volume
- Short interest, 1 month
- −3% to October 15, 2026
- Held by institutions
- 68% of shares
- Held by insiders
- 12.5% of shares
- Employees
- 28 full time
Share-price performance
Market data may be delayedReturn and risk by year
| Calendar year | 2025 | 2026 to date |
|---|---|---|
| Return | ||
| BOLD | −59% | +103% |
| Industry peers (median) | −5% | −27% |
| S&P 500 | +18% | +11% |
| Months that ended higher | ||
| BOLD | 42% | 27% |
| S&P 500 | 75% | 46% |
| Largest fall from a high during the year | ||
| BOLD | −65% | −23% |
| S&P 500 | −19% | −9% |
Worst fall since March 28, 2024: 93% from March 28, 2024 to June 27, 2025. Getting back needed a 1311% gain, and the shares have not yet recovered.
Price behaviour
- 52-week range
- $1.05 – $3.00
- From 52-week high
- −18.7%
- vs 50-day average
- −7.9%
- vs 200-day average
- +27.2%
- Volatility (1 year)
- 99%
- Beta vs S&P 500
- -0.05
Share price after results
- Next day
- 4 up, 5 down typical move ±3.5%
- After a week
- 4 up, 5 down typical move ±8.5%
- After a month
- 1 up, 8 down typical move ±9.1%
| Results released | Next day | S&P 500 next day | 5 days | 21 days |
|---|---|---|---|---|
| May 8, 2026 | +1.3% | +1.1% | −2.6% | −8.5% |
| March 9, 2026 | +1.8% | +0.7% | −0.9% | +1.8% |
| November 5, 2025 | −3.1% | −0.7% | −5.4% | −12.3% |
| August 5, 2025 | −1.7% | +0.3% | −6.7% | −5.8% |
| May 9, 2025 | −0.7% | +3.2% | +10.0% | −28.7% |
| March 27, 2025 | −1.3% | −2.3% | −9.2% | −4.6% |
| November 7, 2024 | +10.4% | +1.2% | +2.2% | −10.1% |
| August 12, 2024 | −3.6% | +1.7% | +16.0% | 0.0% |
| May 13, 2024 | +8.0% | +0.5% | +23.6% | −10.1% |
Fundamentals
Dividends, buybacks and capital spending
- Diluted share count
- +0.4%
- year over year
Who owns it
Funds buying and selling- Reported value
- $38.3M
- Institutions reporting
- 40
- Shares held vs prior quarter
- ▲ 80.3%
- Positions opened / closed
- 13 / 8
| Manager | Value | Shares | Share of 13F value | Shares QoQ |
|---|---|---|---|---|
| Arch Venture Management, LLC | $6.7M | 2.7M | 17.6% | New |
| FMR LLC | $6.5M | 2.6M | 16.9% | ▼ 4.2% |
| Tang Capital Management LLC | $6.4M | 2.6M | 16.7% | New |
| ADAR1 Capital Management, LLC | $4.9M | 2.0M | 12.9% | New |
| Cormorant Asset Management, LP | $2.5M | 1.0M | 6.5% | New |
| Vanguard Capital Management LLC | $1.5M | 615K | 4.0% | ▲ 3.0% |
| Wellington Management Group LLP | $1.4M | 556K | 3.6% | 0.0% |
| Millennium Management LLC | $1.2M | 479K | 3.1% | ▲ 379.2% |
| Renaissance Technologies LLC | $1.2M | 472K | 3.1% | ▲ 18.2% |
| Alyeska Investment Group, L.P. | $750,000 | 300K | 2.0% | 0.0% |
| Affinity Asset Advisors, LLC | $625,000 | 250K | 1.6% | New |
| Rbf Capital, LLC | $500,000 | 200K | 1.3% | 0.0% |
From Form 13F filings with the SEC ( quarterly data sets), as reported by each manager for June 30, 2026 and filed up to 45 days later. 13F reports cover long US-listed positions of managers above $100M only, so this is not Boundless Bio, Inc.'s complete shareholder register. Values are as reported by the filers .
Insider trading activity
Full insider history and chart Insider purchases History → $1.9M 30 trades by 1 insider, last 12 months Insider sales History → $134,031 3 trades by 3 insiders · 0% under pre-set plans
Net ▲ $1.8M net buying
| Insider | Date | Trade | Shares | Price | Value |
|---|---|---|---|---|---|
| Tang Kevin 10% owner | October 27, 2026 | Buy | 10,707 | $2.40 | $25,697 |
| Tang Kevin 10% owner | October 26, 2026 | Buy | 9,606 | $2.38 | $22,862 |
| Tang Kevin 10% owner | October 23, 2026 | Buy | 6,234 | $2.38 | $14,837 |
| Tang Kevin 10% owner | October 22, 2026 | Buy | 5,800 | $2.40 | $13,920 |
| Tang Kevin 10% owner | October 20, 2026 | Buy | 220 | $2.37 | $521 |
| Tang Kevin 10% owner | October 19, 2026 | Buy | 18,279 | $2.33 | $42,590 |
| Tang Kevin 10% owner | October 19, 2026 | Buy | 12,790 | $2.34 | $29,929 |
| Tang Kevin 10% owner | October 16, 2026 | Buy | 118,185 | $2.34 | $276,553 |
| Tang Capital Management Llc 10% owner | August 26, 2026 | Sell | 18,300 | $2.97 | $54,351 |
| Tang Kevin 10% owner | July 21, 2026 | Buy | 2,975 | $2.44 | $7,259 |
| Tang Kevin 10% owner | July 20, 2026 | Buy | 1,623 | $2.44 | $3,960 |
| Tang Kevin 10% owner | July 17, 2026 | Buy | 265 | $2.44 | $647 |
From insiders' Form 4 filings with the SEC. Excludes awards, option exercises and shares withheld for tax. "Pre-set plan" means the filing marks the trade as made under a Rule 10b5-1 plan. See every insider trade since five years ago, on a price chart.
Earnings dates and SEC filings
Results announcements
Next expected around August 4, 2026 estimated from the company's past filing pattern, not announced
- May 8, 2026
- March 9, 2026
- November 5, 2025
- August 5, 2025
- May 9, 2025
- March 27, 2025
Recent SEC filings
- S-4 S-4
- 8-K Current report
- 10-Q Quarterly report
- 8-K Current report
- 8-K Current report
- 10-Q Quarterly report
- 8-K Current report
- DEF 14A Proxy statement
Data status
| Data | Last updated | Source |
|---|---|---|
| Share price | Exchange closing prices | |
| News and updates | Company releases and SEC 8-K filings | |
| Analyst estimates | Aggregated analyst estimates | |
| Valuation and scores | Our models, from the filed figures |
Boundless Bio, Inc. in brief
- What does Boundless Bio, Inc. do?
- Boundless Bio, Inc. is a US-listed company in the biotechnology industry. Its financial year ends in December.
- What is Boundless Bio, Inc.'s stock ticker?
- Boundless Bio, Inc. trades under the ticker BOLD on Nasdaq. This page brings together its financial statements, valuation models, ownership and recent company updates.
- Who are Boundless Bio, Inc.'s largest institutional shareholders?
- By value reported in 13F filings for June 30, 2026, the largest reported holders are Arch Venture Management, LLC, FMR LLC and Tang Capital Management LLC. 13F reports cover long US-listed positions of managers above $100M, filed up to 45 days after quarter end.
- Are insiders buying or selling Boundless Bio, Inc. stock?
- Over the last 12 months, Boundless Bio, Inc.'s directors and officers reported 30 open-market purchases and 3 sales on Form 4. The insider trading page charts every trade.
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