How much would $1,000 invested in MBX be worth today?

$1,000 invested in MBX on September 13, 2024 would be worth $2,262 on October 20, 2026, with dividends reinvested — 47.5% a year compounded (CAGR).

How far back does the MBX calculator go?

MBX data begins September 13, 2024, with a close every session. Pick any start and end date in that span — 2 years, 1 month of history.

Does this include dividends?

Yes. The default "dividends reinvested" view uses split- and dividend-adjusted closing prices — a standard total-return approximation that excludes taxes and fees. A price-only view (split-adjusted, no dividends) is also available.

If You Invested $1,000 in MBX Biosciences (MBX): What It Would Be Worth Today

MBX

$53.50+1.94%

as of close, Oct 20, 2026

☾ AH $53.50 +1.94%

MBX Biosciences Inc.Stock · HealthcareRussell 2000 · 0.05% of IWMNasdaq Composite · 0.004% of ONEQUS Stock Market · 0.003% of VTIRussell 3000 · 0.002% of IWV

PeersMRNALLYMDTUNHJNJTMO

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Your investment#

How much

All at once, on the start date

Pick start & end dates2 years, 1 month

Start

Key dates

Start at a well-known dateRecentMarket topsMarket bottomsEvents

Bought at that day's close

End

Key dates

End at a well-known dateMarket topsMarket bottomsEvents

Latest close, Oct 20, 2026

Or drag the slider to set start and end dates

2024 to today, log scale

2026Sep 2024Today

Options

Result#

$1,000Sep 13, 2024$2,262Oct 20, 20262.3×your money

$1,000 invested in MBX on September 13, 2024 was worth $2,262 on October 20, 2026, with dividends reinvested.

That’s 47.5% a year compounded (CAGR) over 2 years, 1 month: 2.3 times your money.

Over the same dates the same $1,000 would be worth $1,404 in the S&P 500 and $1,527 in the Nasdaq-100: MBX beat both the S&P 500 and the Nasdaq-100.

Price only$2,262if dividends were spent

Biggest fall−77.7%Sep 30, 2024 to Apr 8, 2025

At a flat 5% a year$1,108a savings account's rate

Gain$1,262on $1,000 put in

How this period ranks#

These dates cover the whole record, so there is no other period this long to compare.

Your dates

41.4%42.4%

Worst: —Best: —

Point at a bar to see which periods are in it. Month end to month end.

Growth of $1,000 in MBX, September 13, 2024 to October 20, 2026#

Your $1,000$Your buySame plan in the S&P 500The highA lowLog scale: equal steps are equal percentage moves

Lowest value$245 · Apr 2025Highest value$2,989 · Aug 2026$1,138 · Mar 2026$2,064 · Oct 2026$1,171 · Dec 2025$

$500$1,000$2,262

Oct2025AprJulOct2026AprJulOct

How far MBX was below its previous high. The biggest fall: −77.7% from Sep 30, 2024 to Apr 8, 2025, back to the high by Nov 18, 2025.

−77.7% from its high−37.6% from its high−30.9% from its high−19.7% from its high

high−78%

Your one buy. $1,000 on September 13, 2024, worth $2,262 on October 20, 2026. Pick Monthly or Yearly to see a plan's buys.

2.3×paid

What $1,000 would be worth on October 20, 2026, by start date#

Each point is the same amount invested that day and held to October 20, 2026, dividends reinvested. Above the line it made money.

Your start

$1,000$2,000$5,000

Oct2025AprJulOct2026AprJulOct

$1,000 invested in MBX, by year#

Started on each year's first close and held to Oct 20, 2026, dividends reinvested.

Started	Worth Oct 20, 2026	Multiple	A year (CAGR)	Same in the Nasdaq-100
2024	$2,262	2.3×	47.5%	$1,527
2025	$2,932	2.9×	82.0%	$1,418
2026	$1,751	1.8×	—	$1,174

Methodology#

A buy is made at the start date's close, or the next session's when the market was closed that day, and valued at the end date's close; a monthly or yearly plan buys on the same day of each month or year. "Dividends reinvested" uses split- and dividend-adjusted closes (a standard total-return approximation; taxes and fees excluded). "Price-only" uses split-adjusted closes. MBX data begins September 13, 2024; values as of October 20, 2026 and refresh daily. The ranking compares month-end to month-end periods. Past performance does not predict future returns; not investment advice.

See the live MBX chart and fundamentals on the MBX quote page or the S&P 500 return calculator.

FAQ#

How much would $1,000 invested in MBX be worth today?: $1,000 invested in MBX on September 13, 2024 would be worth $2,262 on October 20, 2026, with dividends reinvested — 47.5% a year compounded (CAGR).
How far back does the MBX calculator go?: MBX data begins September 13, 2024, with a close every session. Pick any start and end date in that span — 2 years, 1 month of history.
Does this include dividends?: Yes. The default "dividends reinvested" view uses split- and dividend-adjusted closing prices — a standard total-return approximation that excludes taxes and fees. A price-only view (split-adjusted, no dividends) is also available.

MBX return calculator