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.
5. Chris Wilder - Sheffield United
Starting Squad Value: £7,657,018 Current Squad Value: £143,600,000 Players Signed: £120,780,000 Players Sold: £15,925,000 Effective Profit: £31,087,982 (Photo by Catherine Ivill/Getty Images) Photo: Catherine Ivill
6. Roy Hodgson - Crystal Palace
Starting Squad Value: £180,482,623 Current Squad Value: £182,270,000 Players Signed: £45,090,000 Players Sold: £68,155,000 Effective Profit: £24,852,377 (Photo by Michael Regan/Getty Images) Photo: Michael Regan
7. Marcelo Bielsa - Leeds United
Starting Squad Value: £85,755,000 Current Squad Value: £147,290,000 Players Signed: £80,170,000 Players Sold: £33,930,000 Effective Profit: £15,295,000 (Photo by Naomi Baker/Getty Images) Photo: Naomi Baker
8. Brendan Rodgers - Leicester City
Starting Squad Value: £384,210,000 Current Squad Value: £410,040,000 Players Signed: £149,670,000 Players Sold: £125,250,000 Effective Profit: £1,410,000 (Photo by Laurence Griffiths/Getty Images) Photo: Laurence Griffiths