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

$1,000 invested in ZBIO on September 13, 2024 would be worth $1,553 on October 20, 2026, with dividends reinvested — 23.3% a year compounded (CAGR).

How far back does the ZBIO calculator go?

ZBIO 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 Zenas BioPharma (ZBIO): What It Would Be Worth Today

ZBIO

$28.18+5.50%

as of close, Oct 20, 2026

☾ AH $28.18 +5.50%

Zenas BioPharma Inc.Stock · HealthcareRussell 2000 · 0.02% of IWMNasdaq Composite · 0.003% of ONEQUS Stock Market · 0.0010% of VTIRussell 3000 · 0.0006% 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$1,553Oct 20, 20261.6×your money

$1,000 invested in ZBIO on September 13, 2024 was worth $1,553 on October 20, 2026, with dividends reinvested.

That’s 23.3% a year compounded (CAGR) over 2 years, 1 month: 1.6 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: ZBIO beat both the S&P 500 and the Nasdaq-100.

Price only$1,553if dividends were spent

Biggest fall−75.0%Oct 22, 2024 to Jan 28, 2025

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

Gain$553on $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

27.7%28.7%

Worst: —Best: —

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

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

Your $1,000$Your buySame plan in the S&P 500The highA low

Lowest value$354 · Jan 2025Highest value$2,379 · Dec 2025$1,901 · Dec 2025$

$0$500$1,000$2,000$1,553

Oct2025AprJulOct2026AprJulOct

How far ZBIO was below its previous high. The biggest fall: −75.0% from Oct 22, 2024 to Jan 28, 2025, back to the high by Oct 8, 2025.

−75.0% from its high−64.8% from its high−19.7% from its high−14.9% from its high

high−75%

Your one buy. $1,000 on September 13, 2024, worth $1,553 on October 20, 2026. Pick Monthly or Yearly to see a plan's buys.

1.6×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

$0$1,000$2,000$3,000$4,000

Oct2025AprJulOct2026AprJulOct

$1,000 invested in ZBIO, 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	$1,553	1.6×	23.3%	$1,527
2025	$3,128	3.1×	88.7%	$1,418
2026	$817	0.82×	—	$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. ZBIO 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 ZBIO chart and fundamentals on the ZBIO quote page or the S&P 500 return calculator.

FAQ#

How much would $1,000 invested in ZBIO be worth today?: $1,000 invested in ZBIO on September 13, 2024 would be worth $1,553 on October 20, 2026, with dividends reinvested — 23.3% a year compounded (CAGR).
How far back does the ZBIO calculator go?: ZBIO 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.

ZBIO return calculator