DJCO vs. COST

Last updated Jun 3, 2026

DJCO (Daily Journal Corporation) and COST (Costco Wholesale Corporation) are both stocks. DJCO operates in Publishing (Communication Services), while COST operates in Discount Stores (Consumer Defensive). Over the past 10 years, DJCO returned 10.37%/yr vs 22.25%/yr for COST. At a 0.08 correlation, their price movements are largely independent.

Performance

DJCO vs. COST - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Daily Journal Corporation (DJCO) and Costco Wholesale Corporation (COST). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, DJCO achieves a 8.14% return, which is significantly lower than COST's 10.97% return. Over the past 10 years, DJCO has underperformed COST with an annualized return of 10.37%, while COST has yielded a comparatively higher 22.25% annualized return.

DJCO

• 1D: -0.02%
• 1M: 2.31%
• YTD: 8.14%
• 6M: 9.37%
• 1Y: 27.56%
• 3Y*: 22.13%
• 5Y*: 8.80%
• 10Y*: 10.37%

COST

• 1D: 0.86%
• 1M: -5.68%
• YTD: 10.97%
• 6M: 3.79%
• 1Y: -9.20%
• 3Y*: 24.67%
• 5Y*: 21.28%
• 10Y*: 22.25%

*Multi-year figures are annualized to reflect compound growth (CAGR)

DJCO vs. COST - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
DJCO Daily Journal Corporation	8.14%	-14.20%	66.65%	36.05%	-29.78%	-11.70%	39.11%	24.11%	1.64%	-4.79%
COST Costco Wholesale Corporation	10.97%	-5.39%	39.62%	49.00%	-19.05%	51.82%	32.67%	45.70%	10.60%	22.37%

Correlation

The correlation between DJCO and COST is 0.06, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.06
Correlation (3Y) Calculated over the trailing 3-year period	0.15
Correlation (5Y) Calculated over the trailing 5-year period	0.18
Correlation (10Y) Calculated over the trailing 10-year period	0.17
Correlation (All Time) Calculated using the full available price history since Sep 23, 1993	0.08

The correlation between DJCO and COST shifts across timeframes, from 0.06 (1 year) to 0.18 (5 years), reflecting how their relationship changes across market environments.

Fundamentals

EPS DJCO : $10.13 COST : $26.51
PE Ratio DJCO : 52.02 COST : 36.00
PEG Ratio DJCO : 0.07 COST : 2.81
PS Ratio DJCO : 7.72 COST : 1.08
Total Revenue (TTM) DJCO : $94.08M COST : $293.59B
Gross Profit (TTM) DJCO : $39.14M COST : $11.12B
EBITDA (TTM) DJCO : $78.21M COST : $12.48B

Return for Risk

DJCO vs. COST — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

DJCO

DJCO Risk / Return Rank: 56
DJCO Sharpe Ratio Rank: 58
DJCO Sortino Ratio Rank: 53
DJCO Omega Ratio Rank: 55
DJCO Calmar Ratio Rank: 58
DJCO Martin Ratio Rank: 57

COST

COST Risk / Return Rank: 22
COST Sharpe Ratio Rank: 19
COST Sortino Ratio Rank: 18
COST Omega Ratio Rank: 19
COST Calmar Ratio Rank: 27
COST Martin Ratio Rank: 25

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

DJCO vs. COST - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Daily Journal Corporation (DJCO) and Costco Wholesale Corporation (COST). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	DJCO	COST	Difference
Sharpe ratio Return per unit of total volatility	0.54	-0.48	+1.02
Sortino ratio Return per unit of downside risk	1.01	-0.56	+1.57
Omega ratio Gain probability vs. loss probability	1.14	0.93	+0.20
Calmar ratio Return relative to maximum drawdown	0.82	-0.40	+1.22
Martin ratio Return relative to average drawdown	1.61	-0.78	+2.39
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

DJCO vs. COST - Sharpe Ratio Comparison

The current DJCO Sharpe Ratio is 0.54, which is higher than the COST Sharpe Ratio of -0.48. The chart below compares the historical Sharpe Ratios of DJCO and COST, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	DJCO	COST	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.54	-0.48	+1.02
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.22	0.94	-0.72
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.27	1.02	-0.75
Sharpe Ratio (All Time) Calculated using the full available price history	0.31	0.58	-0.27

Drawdowns

DJCO vs. COST - Drawdown Comparison

The maximum DJCO drawdown since its inception was -53.80%, roughly equal to the maximum COST drawdown of -53.39%. Use the drawdown chart below to compare losses from any high point for DJCO and COST.

Drawdown Indicators

	DJCO	COST	Difference
Max Drawdown Largest peak-to-trough decline	-53.80%	-53.39%	-0.41%
Max Drawdown (1Y) Largest decline over 1 year	-30.41%	-19.25%	-11.16%
Max Drawdown (3Y) Largest decline over 3 years	-38.01%	-20.74%	-17.27%
Max Drawdown (5Y) Largest decline over 5 years	-40.55%	-31.40%	-9.15%
Max Drawdown (10Y) Largest decline over 10 years	-41.58%	-31.40%	-10.18%
Current Drawdown Current decline from peak	-20.72%	-12.80%	-7.92%
Average Drawdown Average peak-to-trough decline	-19.04%	-13.36%	-5.68%
Ulcer Index Depth and duration of drawdowns from previous peaks	15.57%	9.92%	+5.65%

Volatility

DJCO vs. COST - Volatility Comparison

Daily Journal Corporation (DJCO) has a higher volatility of 10.46% compared to Costco Wholesale Corporation (COST) at 7.99%. This indicates that DJCO's price experiences larger fluctuations and is considered to be riskier than COST based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DJCO	COST	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.46%	7.99%	+2.47%
Volatility (6M) Calculated over the trailing 6-month period	36.54%	14.81%	+21.73%
Volatility (1Y) Calculated over the trailing 1-year period	51.33%	19.17%	+32.16%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	39.90%	22.73%	+17.17%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	38.25%	21.95%	+16.30%

Dividends

DJCO vs. COST - Dividend Comparison

DJCO has not paid dividends to shareholders, while COST's dividend yield for the trailing twelve months is around 0.56%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
COST Costco Wholesale Corporation	0.56%	0.59%	0.49%	2.87%	0.76%	0.54%	3.38%	0.86%	1.08%	4.81%	1.09%	4.06%
DJCO Daily Journal Corporation	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Financials

Frequently Asked Questions

Can I hold both DJCO and COST in my portfolio?

DJCO and COST have a correlation of 0.06, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DJCO or COST?

DJCO has higher volatility (10.46%) compared to COST (7.99%). In terms of maximum drawdown, DJCO dropped -53.80% vs COST's -53.39%.

Which has better risk-adjusted returns?

DJCO currently has the higher Sharpe Ratio (0.54 vs -0.48), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.