They say you have to speculate to accumulate, but things don't always work out that smoothly.
According to the European Football Index, however, Sheffield United are doing pretty well.
After spending over £120 million on players, Chris Wilder has increased the value of his Blades squad significantly during his time in charge.
Click and scroll through to see the full set of figures, and how he compares to his Premier League rivals:
After spending over £120 million on players, Chris Wilder has increased the value of his Blades squad significantly during his time in charge.
13. Ole Gunnar Solskjaer - Manchester United
Starting Squad Value: £627,500,000 Current Squad Value: £731,880,000 Players Signed: £260,350,000 Players Sold: £86,560,000 Effective Profit: -£69,410,000 (Photo by Clive Brunskill/Getty Images) Photo: Clive Brunskill
14. Dean Smith - Aston Villa
Starting Squad Value: £125,130,235 Current Squad Value: £242,910,000 Players Signed: £217,310,000 Players Sold: £6,090,000 Effective Profit: -£93,440,235 (Photo by Clive Mason/Getty Images) Photo: Clive Mason
15. Graham Potter - Brighton
Starting Squad Value: £204,525,000 Current Squad Value: £173,210,000 Players Signed: £88,600,000 Players Sold: £25,290,000 Effective Profit: -£94,625,000 (Photo by Rui Vieira / various sources / AFP) Photo: RUI VIEIRA
16. Steve Bruce - Newcastle United
Starting Squad Value: £280,193,000 Current Squad Value: £239,990,000 Players Signed: £100,490,000 Players Sold: £32,328,000 Effective Profit: -£108,365,000 (Photo by Adam Davy - Pool/Getty Images) Photo: Pool