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Side-by-side financial comparison of ASP Isotopes Inc. (ASPI) and Postal Realty Trust, Inc. (PSTL). Click either name above to swap in a different company.

Postal Realty Trust, Inc. is the larger business by last-quarter revenue ($26.0M vs $16.7M, roughly 1.6× ASP Isotopes Inc.). On growth, ASP Isotopes Inc. posted the faster year-over-year revenue change (1295.7% vs 21.7%). Postal Realty Trust, Inc. produced more free cash flow last quarter ($37.6M vs $-47.4M).

ASP Isotopes Inc. is a specialty materials firm focused on developing and producing high-purity custom isotopes. Its products serve key sectors including nuclear medicine, targeted cancer therapies, advanced energy, and industrial research, with customers across North America, Europe and Asia Pacific.

Postal Realty Trust, Inc. is a specialized real estate investment trust that acquires, owns, and manages properties primarily leased to the United States Postal Service. Its portfolio includes last-mile postal facilities, sorting centers, and retail post office locations across the U.S., supporting critical mail and package delivery infrastructure.

ASPI vs PSTL — Head-to-Head

Bigger by revenue
PSTL
PSTL
1.6× larger
PSTL
$26.0M
$16.7M
ASPI
Growing faster (revenue YoY)
ASPI
ASPI
+1274.0% gap
ASPI
1295.7%
21.7%
PSTL
More free cash flow
PSTL
PSTL
$85.0M more FCF
PSTL
$37.6M
$-47.4M
ASPI

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
ASPI
ASPI
PSTL
PSTL
Revenue
$16.7M
$26.0M
Net Profit
$4.6M
Gross Margin
12.5%
Operating Margin
39.2%
Net Margin
17.9%
Revenue YoY
1295.7%
21.7%
Net Profit YoY
-586.8%
3.1%
EPS (diluted)
$0.16

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
ASPI
ASPI
PSTL
PSTL
Q4 25
$16.7M
$26.0M
Q3 25
$4.9M
$24.3M
Q2 25
$23.4M
Q1 25
$22.1M
Q4 24
$21.4M
Q3 24
$19.7M
Q2 24
$18.1M
Q1 24
$17.3M
Net Profit
ASPI
ASPI
PSTL
PSTL
Q4 25
$4.6M
Q3 25
$-12.9M
$3.8M
Q2 25
$3.6M
Q1 25
$2.1M
Q4 24
$4.5M
Q3 24
$1.1M
Q2 24
$817.0K
Q1 24
$206.0K
Gross Margin
ASPI
ASPI
PSTL
PSTL
Q4 25
12.5%
Q3 25
8.7%
Q2 25
Q1 25
Q4 24
Q3 24
Q2 24
Q1 24
Operating Margin
ASPI
ASPI
PSTL
PSTL
Q4 25
39.2%
Q3 25
-306.1%
37.6%
Q2 25
37.3%
Q1 25
28.4%
Q4 24
43.2%
Q3 24
24.3%
Q2 24
22.8%
Q1 24
17.6%
Net Margin
ASPI
ASPI
PSTL
PSTL
Q4 25
17.9%
Q3 25
-263.7%
15.7%
Q2 25
15.5%
Q1 25
9.4%
Q4 24
21.1%
Q3 24
5.4%
Q2 24
4.5%
Q1 24
1.2%
EPS (diluted)
ASPI
ASPI
PSTL
PSTL
Q4 25
$0.16
Q3 25
$-0.15
$0.13
Q2 25
$0.12
Q1 25
$0.06
Q4 24
$0.17
Q3 24
$0.03
Q2 24
$0.02
Q1 24
$-0.01

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
ASPI
ASPI
PSTL
PSTL
Cash + ST InvestmentsLiquidity on hand
$333.3M
$1.5M
Total DebtLower is stronger
$14.4M
$361.1M
Stockholders' EquityBook value
$204.2M
$285.2M
Total Assets
$498.0M
$759.1M
Debt / EquityLower = less leverage
0.07×
1.27×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
ASPI
ASPI
PSTL
PSTL
Q4 25
$333.3M
$1.5M
Q3 25
$113.9M
$1.9M
Q2 25
$1.1M
Q1 25
$639.0K
Q4 24
$1.8M
Q3 24
$970.0K
Q2 24
$1.7M
Q1 24
$1.9M
Total Debt
ASPI
ASPI
PSTL
PSTL
Q4 25
$14.4M
$361.1M
Q3 25
$13.9M
$347.0M
Q2 25
$328.8M
Q1 25
$306.7M
Q4 24
$296.7M
Q3 24
$277.0M
Q2 24
$273.7M
Q1 24
$247.6M
Stockholders' Equity
ASPI
ASPI
PSTL
PSTL
Q4 25
$204.2M
$285.2M
Q3 25
$74.1M
$273.9M
Q2 25
$250.8M
Q1 25
$245.5M
Q4 24
$251.3M
Q3 24
$245.6M
Q2 24
$245.5M
Q1 24
$248.1M
Total Assets
ASPI
ASPI
PSTL
PSTL
Q4 25
$498.0M
$759.1M
Q3 25
$225.9M
$735.2M
Q2 25
$689.8M
Q1 25
$654.0M
Q4 24
$646.8M
Q3 24
$615.1M
Q2 24
$608.2M
Q1 24
$584.1M
Debt / Equity
ASPI
ASPI
PSTL
PSTL
Q4 25
0.07×
1.27×
Q3 25
0.19×
1.27×
Q2 25
1.31×
Q1 25
1.25×
Q4 24
1.18×
Q3 24
1.13×
Q2 24
1.11×
Q1 24
1.00×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
ASPI
ASPI
PSTL
PSTL
Operating Cash FlowLast quarter
$-37.8M
$44.5M
Free Cash FlowOCF − Capex
$-47.4M
$37.6M
FCF MarginFCF / Revenue
-284.7%
144.5%
Capex IntensityCapex / Revenue
57.9%
26.7%
Cash ConversionOCF / Net Profit
9.59×
TTM Free Cash FlowTrailing 4 quarters
$65.6M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
ASPI
ASPI
PSTL
PSTL
Q4 25
$-37.8M
$44.5M
Q3 25
$-8.9M
$10.9M
Q2 25
$11.4M
Q1 25
$10.8M
Q4 24
$33.5M
Q3 24
$8.0M
Q2 24
$9.9M
Q1 24
$6.4M
Free Cash Flow
ASPI
ASPI
PSTL
PSTL
Q4 25
$-47.4M
$37.6M
Q3 25
$-12.0M
$8.8M
Q2 25
$9.1M
Q1 25
$10.2M
Q4 24
$30.7M
Q3 24
$7.4M
Q2 24
$8.9M
Q1 24
$5.8M
FCF Margin
ASPI
ASPI
PSTL
PSTL
Q4 25
-284.7%
144.5%
Q3 25
-245.5%
36.1%
Q2 25
38.8%
Q1 25
45.9%
Q4 24
143.8%
Q3 24
37.6%
Q2 24
49.4%
Q1 24
33.6%
Capex Intensity
ASPI
ASPI
PSTL
PSTL
Q4 25
57.9%
26.7%
Q3 25
64.4%
8.9%
Q2 25
10.1%
Q1 25
3.0%
Q4 24
13.0%
Q3 24
3.2%
Q2 24
5.4%
Q1 24
3.5%
Cash Conversion
ASPI
ASPI
PSTL
PSTL
Q4 25
9.59×
Q3 25
2.87×
Q2 25
3.16×
Q1 25
5.20×
Q4 24
7.44×
Q3 24
7.48×
Q2 24
12.10×
Q1 24
31.07×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

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