Retail investors at online broker Avanza Bank did not flee the market during the March downturn; instead, they navigated the uncertainty through a combination of profit-taking, dividend hunting, and dip-buying.

The most net-bought stocks were the perennial favorite Investor, alongside major banks Handelsbanken and Swedbank.

"The trend of sticking with favorites is clear. Several of the most-bought companies have remained at the top throughout the year, and savers continue to add to positions they already like, such as the major banks and Investor," says Elin Wiker, equity strategist at Avanza.

Another stock that found its way to the top of the buy list is investment firm Kinnevik, which tumbled following a short-seller attack. However, according to Wiker, this may not be the month's most interesting dip-buy; that title goes to mining giant Boliden, "which swung from being heavily net-sold to landing among the top buys after a price drop of nearly 20 percent following its profit warning."

On the sell side, the list is dominated by hyped semiconductor firm Sivers Semiconductors and high-flyers such as Millicom and Aker BP.

Most BoughtMost Sold
HandelsbankenSivers Semiconductors
SwedbankAker BP
Investor BMillicom
EQTNvidia
Atlas CopcoSaab
WalmartVår Energi
BolidenTelia
CibusAvanza
KinnevikHöegh Autoliners
ThuleNibe