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BLKB return calculator

Your investment#

How much
$
All at once, on the start date
Pick start & end dates10 years
Key datesStart at a well-known dateRecentMarket topsMarket bottomsEvents
Bought at that day's close
Key datesEnd at a well-known dateMarket topsMarket bottomsEvents
Latest close, Oct 20, 2026

Or drag the slider to set start and end dates

2004 to today, log scale
2008 crisisCovid
2005Oct 2016Today
Options

Result#

$1,000Oct 20, 2016$859Oct 20, 20260.86× 

$1,000 invested in BLKB on October 20, 2016 was worth $859 on October 20, 2026, with dividends reinvested.

That’s −1.5% a year compounded (CAGR) over 10 years: 0.86 times your money.

Over the same dates the same $1,000 would be worth $4,210 in the S&P 500 and $6,533 in the Nasdaq-100: BLKB trailed both the S&P 500 and the Nasdaq-100.

Price only$842if dividends were spent
Biggest fall−77.4%Jul 23, 2018 to Jun 22, 2026
At a flat 5% a year$1,629a savings account's rate
Loss$141on $1,000 put in

How this period ranks#

Better than 5% of all 148 periods of 10 years since 2004.

Your dates
−60%0%90%
Worst: −7.8% a year, Jun 2016 to Jun 2026Best: 24.0% a year, Feb 2009 to Feb 2019
One scale for every length, so longer periods bunch up. Point at a bar.

Growth of $1,000 in BLKB, October 20, 2016 to October 20, 2026#

Your $1,000$Your buySame plan in the S&P 500The highA low
Lowest value$426 · Jun 2026Highest value$1,887 · Jul 2018$
$0$2,000$3,000$4,000$859
20182020202220242026

How far BLKB was below its previous high. The biggest fall: −77.4% from Jul 23, 2018 to Jun 22, 2026, not back to the high by the end date.

−77.4% from its high
high−77%

Your one buy. $1,000 on October 20, 2016, worth $859 on October 20, 2026. Pick Monthly or Yearly to see a plan's buys.

paid0.86×

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
$500$1,000$2,000$5,000
20052010201520202025

$1,000 invested in BLKB, by year#

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

StartedWorth Oct 20, 2026MultipleA year (CAGR)
2017$8390.84×−1.8%
2018$5750.58×−6.1%
2019$8530.85×−2.0%
2020$6630.66×−5.9%
2021$9370.94×−1.1%
2022$6750.67×−7.9%
2023$8950.89×−2.9%
2024$6260.63×−15.4%
2025$7270.73×−16.3%
2026$9000.90×—

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. BLKB data begins July 26, 2004; 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 BLKB chart and fundamentals on the BLKB quote page or the S&P 500 return calculator.

FAQ#

How much would $1,000 invested in BLKB be worth today?
$1,000 invested in BLKB on October 20, 2016 would be worth $859 on October 20, 2026, with dividends reinvested — −1.5% a year compounded (CAGR).
How far back does the BLKB calculator go?
BLKB data begins July 26, 2004, with a close every session. Pick any start and end date in that span — 22 years, 3 months 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.