It may not be moral to invest in so-called sin stocks but it sure is profitable.Tobacco has been the best-performing sector in the US over the last 11(...)

Proinsias O’Mahony takes a look at the ups and downs of the stock market (...)

German bourse trader Matthias Praeger looks up to check his monitors as he sits in front of the German share price index DAX board at the stock exchange in Frankfurt. Photograph: Kai Pfaffenbach/Reuters

Proinsias O’Mahony assesses if European equities are really good for further gains (...)

Decent earnings support stocksUS earnings season has been surprisingly strong, given the obvious headwinds – a stronger dollar and cratering oil profi(...)

NYSE traders: Critics say cap-weighted indices run the risk of significant declines if a handful of constituent stocks tumble and that tracker funds will end up being too invested in overpriced stocks, and too little in underpriced stocks. Photograph: Brendan McDermid/Reuters

Traditionally, investors had two choices – track stock markets by buying low-cost index funds, or opt for more expensive active funds that try to beat(...)

US stocks gained last week, but it has been an iffy 2015 for the S&P 500, which has badly underperformed other developed markets. Photograph: by Andrew Burton/Getty Images

Proinsias O’Mahony takes a look at the ups and downs of the stock market (...)

Checking Japan’s Nikkei: buying unpopular stocks on the Japanese index between 1981 and 2010 returned 13.6 per cent annually, compared with a meagre 3.97 per cent for the overall market. Photograph: Toru Yamanaka/AFP/Getty Images

Assembling a portfolio of unpopular stocks might seem like an unconventional investing approach, but research indicates it may well be a winning one. (...)

A plastic bull figurine, symbol of the Frankfurt stock exchange is pictured in front of the German share price index DAX board at the Frankfurt stock exchange. Photograph: Kai Pfaffenbach/Reuters

Proinsias O’Mahony takes a look at the ups and downs of the stock market (...)

Swiss National Bank’s decision to end the Swiss franc’s peg with the euro has resulted in the euro falling as much as 41 per cent against the franc.  Photograph: Thomas Hodel/Reuters

Last November, I reported on a French survey that found nine out of 10 foreign exchange traders lost money, and cautioned that leveraged trading is al(...)

A trader works on the floor of the New York Stock Exchange. Photograph: Andrew Burton/Getty Images

Are we beginning to see an end to the long period of US equity outperformance?The US market has trounced its developed market counterparts in recent y(...)