LONDON -- Disastrous events can lead a company's shares to suffer badly. As the crisis of confidence reaches a crescendo, many investors will even suggest that the shares are not worth buying at any price.

Don't think that buying a large-cap company will prevent a crisis from ever visiting your portfolio. Some of the companies below were previously considered the bluest of blue-chip shares.

Buying a share that is currently suffering a crisis can prove highly profitable -- as can holding on for a recovery. Here are five companies whose shares made a strong recovery after being hit hard.

1. BP (LSE: BP.L)
The Gulf of Mexico disaster was a real crisis for BP: Billions of dollars of costs were incurred, the public and political criticism was scathing, BP was pushed to the brink, and 11 men died.

Given the amount of suffering caused by the rig explosion, it seems callous to talk about the BP share price. Yet BP shareholders had no choice but to worry.

In April 2010, days before the explosion, BP shares traded around 650 pence -- their highest price since 2006. As the crisis unfolded, the shares fell further. By the end of June, shares in BP traded around 300 pence. BP canceled three dividend payments in 2010. Yet by the beginning of 2011, BP shares were back up to 500 pence.

The payout has since recovered significantly but is still below the level shareholders enjoyed before the disaster.

2. Barclays (LSE: BARC.L)
Barclays' role in conspiring to fix the LIBOR interest rate pushed the company into crisis.

Before the scandal broke, Barclays shares traded around 200 pence. As investors panicked over possible recriminations and ramifications (large fines and reputational damage), the shares fell as low as 150 pence.

Barclays' chief executive and chairman were forced to resign. Before the scandal broke, such upheaval would have been considered a crisis in itself. However, when a company's reputation is being battered, some high-profile bloodletting is often good for the share price.

Within two months of hitting 150 pence, Barclays' shares were back at around 200 pence. The shares were helped further by positive news from the eurozone. In the last month, Barclays has traded close to 250 pence.

As with BP, investors would have done well if they had bought when the company's chief executive was summoned before a panel of politicians.

3. Wm. Morrison (LSE: MRW.L)
From its origins as a market stall in the late 19th century, Morrisons has grown to be the fourth-largest food retailer in the U.K. today. One key development in the company's history was the 3 billion pound takeover of Safeway in 2004. This transformed Morrisons into a top-tier retailer with nationwide reach. However, the deal encountered significant integration difficulties.

This resulted in profit warnings and significant investor disquiet. There were even calls for its septuagenarian founder, Sir Ken Morrison, to leave the board -- mostly from people with zero experience in retail.

Again, there was an important sign in the company's dividend. Despite the criticism, Morrisons increased its dividend almost 14% with the 2005 finals. This did not stop the shares from falling as low as 165 pence. Yet within 18 months, the shares were back above 300 pence.

Morrison's dividend is expected to hit 11.8 pence for 2013 -- more than three times the 2005 payout. The Safeway acquisition was a company-maker.

4. Standard Chartered (LSE: STAN.L)
In August, Standard Chartered was accused by U.S. authorities of channeling monies through a New York office to Iranian financial institutions. You are not supposed to do this when it breaks U.S. economic sanctions.

This news came almost immediately after the LIBOR scandal reached its peak. Shares in Standard Chartered slumped as investors began speculating on just how much this would cost the company. Some were even speculating that Standard Chartered could be kicked out of the U.S. entirely.

At worst, shares in the bank fell to 1,228 pence. Before the crisis broke, they had traded at more than 1,500 pence. Six weeks later, Standard Chartered announced a $340 million settlement with U.S. regulators. The effect of this announcement was to draw a line under the issue for investors. On the day the settlement was announced, the shares were back at 1,487 pence.

5. Royal Dutch Shell (LSE: RDSB.L)
Shell is one of the most remarkable companies in the FTSE 100; it is a true global titan. Shell has not cut its dividend since the end of World War II. For the last two years, Shell's total dividend distributions have been higher than those of any other U.K.-listed company.

However, even giants can stumble.

In January 2004, the news broke that Shell had been overstating its reserves. In the month that followed, the shares fell from 1,450 pence to 1,215 pence. Confidence was hit hard, and senior executives departed. A BBC report at the time described the company as "looking distinctly third rate" in comparison with the other majors.

Examining the contemporary reports demonstrates just how investors and the media can be driven into a state of terminal speculation by something that is almost forgotten within a year or two. The real clue to investors was in the dividend: Shell's dividend was still increased following the crisis.

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