I love buying inexpensive stocks and there are some amazing ones FTSE100 opportunities there now. Especially these three.

Last Sunday (August 4th) I noticed that BP (LSE:BP) the share price hit a 52-week low and I said it looked like “occasion of the year!”

Great value?

The oil giant’s shares have fallen another 2.48% since then. They’re down 10.57% in 12 months and are trading at just 6.26 times earnings. Better yet, they’re yielding 5.18%.

Its profits and share price soared during the energy crisis. But as oil prices fell, they halved in fiscal 2023, from $27.2 billion to $13.8 billion.

BP continued to reward long-term shareholders by raising its dividend by 10% and buying back $7.9bn of shares. At £20.9bn, net debt is at a 10-year low.

With Brent crude falling below $80 a barrel, investors remain wary. Others are wary as BP doubles down on fossil fuel spending despite its commitment to net zero emissions. Energy stocks are cyclical, and I think the time to buy BP is when it falls, not when it rises. Global warming poses a risk, but I’ll buy when I have the cash.

Speaking of climate change, in July I drew attention to the insurer Lloyds of London Beazley (LSE: BEZ). As a specialist insurance and reinsurance company, it will cover the costs of tomorrow’s floods, storms and hurricanes.

That partly explains why the share price is so low, trading at just 4.47 times last month’s earnings. That’s despite the stock rising 35.27% in 12 months, boosted by a 155% jump in pre-tax profit in 2023 to a record $1.25 billion.

The company’s good run continues with its half-year results released on 8 August, which showed a record pre-tax profit of $728.9m, almost double last year’s profit of $366.4m. Beazley was the best performing company on the FTSE 100 last week, up 12.53%.

NatWest Group returns

Its 1.96% yield is on the lower end, but that’s partly due to the rising share price. Another one to buy when I have the cash.

NatWest Group (LSE:NWG) is also on a roll. Its shares are the second best performer on the FTSE 100 over the past six months, up 58.4%. Only Darktrace’s shares rose faster, up 68.2%. NatWest’s shares rose 38.85% over 12 months.

The massive banks are finally living up to their potential, with NatWest leading the way. And yet the stock is still surprisingly inexpensive, trading at 6.67 times earnings. The yield is also attractive at 5.11%.

Labour’s decision to withdraw plans to sell the government’s remaining stake in NatWest has led to a rise in the value of the shares as there will be no shares available at a discounted price.

Analysts at Berenberg have raised their target price to 415p. NatWest shares are currently trading at 334p, giving a potential upside of 25%.

Not all days are elated, though. First-half profits fell 15.6% to £3.03bn, while net interest margins fell 16 basis points to 2.07%. Margins could be squeezed even further if interest rates are cut. Despite this, I would still buy NatWest at today’s low valuation if I hadn’t already invested in the banking sector via Lloyds Banking Group.