TD Direct Investing found that its customers looked to financial institutions the most over the year, with Lloyds Banking Group the most purchased stock, accounting for almost one in four (24.1%) buys.
In addition, Barclays (15.6%) and Royal Bank of Scotland Group (11.9%) were the second and third most purchased equities respectively.
The banks were also the most sold equities during 2011, with Lloyds also taking the top spot in the sells table, with almost one in five trades.
Barclays accounted for 17.4% of sales, while Royal Bank of Scotland Group made up 13.5%.
Investors also looked to resources over the 12 months, with BP, Xcite Energy and Range Resources all featuring in the top ten sales table.
"Our annual review of the top ten trades show that once again, banks and resources stocks remain the most popular trades among TD customers," said Stuart Welch, CEO of TD Direct Investing.
"Lloyds Banking Group in particular has held onto the top spot in both tables for the second year in a row, while Barclays has moved up to become our customers' second most popular trade for 2011."
Aviva also featured in both the top ten buys and sells table in the year as the eighth most bought and the ninth most sold stock.
One surprise was the lack of any house-builders in the top ten sales, with Taylor Wimpey and Barratt Development not featuring for the first time in four years, even though some analysts say the property sector is showing signs of coming through the downturn.
"Other analysts worry that the market hasn't woken up to the crisis and the property market bubble is yet to burst," added Mr Welch.
"This ties-in with our own independent research, which shows that investor confidence in the property market first started to wane in 2008 and it has not returned to pre-financial crisis levels since that time."
Looking for the right investment? Compare investments
Disclaimer: Information is correct as of the date of publication (shown at the top of this article). Any products featured may be withdrawn by their provider or changed at any time.
Moneyfacts.co.uk will, like most other websites, place cookies onto your computer’s
hard drive. This includes tracking cookies.