CBG.L vs. PROK

Last updated Jun 4, 2026

CBG.L (Close Brothers Group plc) and PROK (ProKidney Corp.) are both stocks. CBG.L operates in Banks - Regional (Financial Services), while PROK operates in Biotechnology (Healthcare). Over the past 3 years, CBG.L returned -21.16%/yr vs -48.15%/yr for PROK. At a 0.10 correlation, their price movements are largely independent.

Performance

CBG.L vs. PROK - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in Close Brothers Group plc (CBG.L) and ProKidney Corp. (PROK). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

CBG.L is traded in GBp, while PROK is traded in USD. To make them comparable, the PROK values have been converted to GBp using the latest available exchange rates.

Returns By Period

In the year-to-date period, CBG.L achieves a -14.14% return, which is significantly higher than PROK's -22.48% return.

CBG.L

• 1D: -0.58%
• 1M: 1.59%
• YTD: -14.14%
• 6M: 1.45%
• 1Y: 37.61%
• 3Y*: -21.16%
• 5Y*: -19.78%
• 10Y*: -6.62%

PROK

• 1D: -8.71%
• 1M: -7.23%
• YTD: -22.48%
• 6M: -30.05%
• 1Y: 123.57%
• 3Y*: -48.15%
• 5Y*: —
• 10Y*: —

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

CBG.L vs. PROK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
CBG.L Close Brothers Group plc	-14.14%	121.21%	-70.25%	-17.80%	6.45%
PROK ProKidney Corp.	-22.48%	23.10%	-3.40%	-75.35%	-21.88%

Correlation

The correlation between CBG.L and PROK is 0.16, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.16
Correlation (3Y) Calculated over the trailing 3-year period	0.12
Correlation (All Time) Calculated using the full available price history since Jul 13, 2022	0.10

Fundamentals

Market Cap CBG.L : £671.11M PROK : $245.53B
EPS CBG.L : -£0.82 PROK : -$0.00
PS Ratio CBG.L : 0.36 PROK : 69.24K
PB Ratio CBG.L : 0.46 PROK : 933.21
Total Revenue (TTM) CBG.L : £1.84B PROK : $889.00K
Gross Profit (TTM) CBG.L : £1.58B PROK : -$2.18M
EBITDA (TTM) CBG.L : £174.70M PROK : -$112.46M

Return for Risk

CBG.L vs. PROK — Risk / Return Rank

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

CBG.L

CBG.L Risk / Return Rank: 63
CBG.L Sharpe Ratio Rank: 65
CBG.L Sortino Ratio Rank: 64
CBG.L Omega Ratio Rank: 63
CBG.L Calmar Ratio Rank: 62
CBG.L Martin Ratio Rank: 63

PROK

PROK Risk / Return Rank: 76
PROK Sharpe Ratio Rank: 49
PROK Sortino Ratio Rank: 99
PROK Omega Ratio Rank: 98
PROK Calmar Ratio Rank: 72
PROK Martin Ratio Rank: 63

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.

CBG.L vs. PROK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Close Brothers Group plc (CBG.L) and ProKidney Corp. (PROK). 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.

	CBG.L	PROK	Difference
Sharpe ratio Return per unit of total volatility	0.72	0.24	+0.49
Sortino ratio Return per unit of downside risk	1.44	6.84	-5.40
Omega ratio Gain probability vs. loss probability	1.18	1.78	-0.60
Calmar ratio Return relative to maximum drawdown	1.00	1.78	-0.78
Martin ratio Return relative to average drawdown	2.36	2.37	-0.01
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CBG.L vs. PROK - Sharpe Ratio Comparison

The current CBG.L Sharpe Ratio is 0.72, which is higher than the PROK Sharpe Ratio of 0.24. The chart below compares the historical Sharpe Ratios of CBG.L and PROK, 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

	CBG.L	PROK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.72	0.24	+0.49
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.40	—	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.16	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.21	-0.13	+0.34

Drawdowns

CBG.L vs. PROK - Drawdown Comparison

The maximum CBG.L drawdown since its inception was -86.76%, smaller than the maximum PROK drawdown of -96.46%. Use the drawdown chart below to compare losses from any high point for CBG.L and PROK.

Drawdown Indicators

	CBG.L	PROK	Difference
Max Drawdown Largest peak-to-trough decline	-86.76%	-96.46%	+9.70%
Max Drawdown (1Y) Largest decline over 1 year	-37.33%	-69.67%	+32.34%
Max Drawdown (3Y) Largest decline over 3 years	-79.97%	-96.09%	+16.12%
Max Drawdown (5Y) Largest decline over 5 years	-86.55%	—	—
Max Drawdown (10Y) Largest decline over 10 years	-86.76%	—	—
Current Drawdown Current decline from peak	-67.89%	-88.60%	+20.71%
Average Drawdown Average peak-to-trough decline	-22.65%	-65.86%	+43.21%
Ulcer Index Depth and duration of drawdowns from previous peaks	15.88%	52.38%	-36.50%

Volatility

CBG.L vs. PROK - Volatility Comparison

The current volatility for Close Brothers Group plc (CBG.L) is 12.27%, while ProKidney Corp. (PROK) has a volatility of 18.26%. This indicates that CBG.L experiences smaller price fluctuations and is considered to be less risky than PROK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CBG.L	PROK	Difference
Volatility (1M) Calculated over the trailing 1-month period	12.27%	18.26%	-5.99%
Volatility (6M) Calculated over the trailing 6-month period	34.37%	50.31%	-15.94%
Volatility (1Y) Calculated over the trailing 1-year period	51.74%	526.26%	-474.52%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	48.98%	284.91%	-235.93%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	40.23%	284.91%	-244.68%

Dividends

CBG.L vs. PROK - Dividend Comparison

Neither CBG.L nor PROK has paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
CBG.L Close Brothers Group plc	0.00%	0.00%	0.00%	8.50%	6.30%	4.27%	2.89%	4.13%	4.38%	4.14%	3.94%	4.00%
PROK ProKidney Corp.	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 CBG.L and PROK in my portfolio?

CBG.L and PROK have a correlation of 0.16, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.