BST vs ZROZ

Comparison between BlackRock Science and Technology Trust (BST, ETF) and PIMCO 25+ YEAR ZERO COUPON U.S. TREASURY INDEX EXCHANGE-TRADED FUND (ZROZ, ETF).

5-Year PerformanceBST has outperformed ZROZ, delivering a return of +4.1% compared to -11.4%

BST vs ZROZ - Performance Comparison

Log

Key Characteristics

Financial metrics and valuation ratios

Metric	BST(ETF)	ZROZ(ETF)
Net Assets	$1.40B	$1.40B
Expense Ratio	N/A	0.15%
Max Drawdown	53.54%	67.48%
Sharpe Ratio	2.05	-0.21
5Y Beta	1.05	0.11
5Y Dividends CAGR	15.26%	3.66%

Net Assets

BST

$1.40B

ZROZ

$1.40B

Expense Ratio

BST

N/A

ZROZ

0.15%

Max Drawdown

Winner

BST

53.54%

ZROZ

67.48%

Sharpe Ratio

Winner

BST

2.05

ZROZ

-0.21

5Y Beta

BST

1.05

Winner

ZROZ

0.11

5Y Dividends CAGR

Winner

BST

15.26%

ZROZ

3.66%

BST vs ZROZ - Historical Returns

Returns include dividend reinvestment.

Period	BST	ZROZ
1 month	+17.51%	-1.33%
3 months	+13.02%	-0.95%
6 months	+16.19%	-4.75%
1 year	+44.42%	+0.27%
5 years(CAGR)	+4.14%	-11.36%
10 years(CAGR)	+19.72%	-3.79%
Max(CAGR)	+15.67%	+2.14%

Winner

BST

+17.51%

ZROZ

-1.33%

Winner

BST

+13.02%

ZROZ

-0.95%

Winner

BST

+16.19%

ZROZ

-4.75%

Winner

BST

+44.42%

ZROZ

+0.27%

5Y(CAGR)

Winner

BST

+4.14%

ZROZ

-11.36%

10Y(CAGR)

Winner

BST

+19.72%

ZROZ

-3.79%

Max(CAGR)

Winner

BST

+15.67%

ZROZ

+2.14%

BST vs ZROZ - Annual Returns (2009 - 2026)

Returns include dividend reinvestment.

Year	BST	ZROZ
2026	+13.39%	-0.16%
2025	+23.38%	-1.87%
2024	+19.53%	-15.03%
2023	+29.35%	-1.52%
2022	-39.53%	-39.26%
2021	+0.28%	-4.79%
2020	+62.87%	+22.56%
2019	+32.28%	+20.05%
2018	+6.28%	-3.51%
2017	+55.34%	+13.87%
2016	+13.72%	-0.31%
2015	+4.25%	-7.39%
2014	-11.54%	+48.29%
2013	N/A	-19.11%
2012	N/A	+3.51%
2011	N/A	+61.75%
2010	N/A	+9.96%
2009	N/A	-6.29%

BST vs ZROZ Drawdown Comparison

The maximum drawdown for BST was -47.73%, occurring on Oct 14, 2022. Recovery took 1073 trading sessions.

The maximum drawdown for ZROZ was -62.94%, occurring on Oct 19, 2023. This drawdown has not yet recovered.

The current ZROZ drawdown is -59.76%.

Rank	BST	ZROZ
#1	-47.73% Jun 30, 2021 - Oct 8, 2025	-62.94% Mar 9, 2020 - Oct 19, 2023
#2	-33.98% Feb 19, 2020 - May 20, 2020	-32.29% Jul 25, 2012 - Dec 11, 2014
#3	-30.61% Oct 3, 2018 - Jul 19, 2019	-28.88% Aug 26, 2010 - Aug 10, 2011
#4	-23.95% Dec 5, 2014 - Aug 12, 2016	-25.82% Jan 30, 2015 - Jun 27, 2016
#5	-16.60% Feb 12, 2021 - Jun 15, 2021	-25.21% Jul 8, 2016 - Aug 2, 2019
#6	-15.32% Oct 31, 2025 - Apr 17, 2026	-18.35% Oct 3, 2011 - Dec 19, 2011
#7	-13.41% Sep 2, 2020 - Oct 9, 2020	-17.49% Dec 19, 2011 - May 17, 2012
#8	-12.10% Mar 12, 2018 - May 9, 2018	-15.67% Nov 27, 2009 - May 6, 2010
#9	-11.58% Jan 26, 2018 - Feb 15, 2018	-12.23% Aug 28, 2019 - Feb 20, 2020
#10	-8.68% Jul 24, 2019 - Nov 27, 2019	-9.10% Aug 10, 2011 - Aug 18, 2011
#11	-8.46% Oct 13, 2020 - Nov 5, 2020	-8.29% May 6, 2010 - May 20, 2010
#12	-7.49% Jul 25, 2018 - Sep 4, 2018	-7.85% Sep 22, 2011 - Oct 3, 2011
#13	-6.12% Jun 13, 2018 - Jul 16, 2018	-7.18% Aug 19, 2011 - Sep 2, 2011
#14	-5.78% Jun 15, 2021 - Jun 30, 2021	-7.09% Jun 1, 2012 - Jul 20, 2012
#15	-5.67% Nov 6, 2017 - Nov 22, 2017	-6.88% Jul 1, 2010 - Aug 16, 2010

Correlation

Correlation between BST and ZROZ is -0.04 which considered as a very weak or no correlation - the stocks move independently of each other.

-0.04

-101

Dividend Comparison (2009 - 2026)

BST vs ZROZ dividend yield comparison.

Year	BST	ZROZ
2026	2.23%	1.30%
2025	10.36%	4.96%
2024	8.21%	4.58%
2023	8.91%	3.52%
2022	10.57%	2.76%
2021	5.38%	1.60%
2020	3.85%	1.68%
2019	10.52%	2.22%
2018	6.41%	2.06%
2017	4.80%	2.53%
2016	6.69%	3.00%
2015	6.93%	2.98%
2014	0.57%	2.60%
2013	0.00%	4.28%
2012	0.00%	3.16%
2011	0.00%	2.99%
2010	0.00%	4.55%
2009	0.00%	0.74%