The winner in terms of share price doubled its value while the loser lost more than half, painting a picture of a massive level of disparity between the two opposite ends of the spectrum.
According to Interactive Investor, NMC Health's share price grew the most over the course of the year, at 92%. Number two was mining company Evraz, with an increase of 79%, beating Easyjet's increase of 50%.
It wasn't all good news however, with Micro Focus International losing 59% of it's value over the course of the year.
Over a third of the value of Imperial Brands, Centrica, WPP and ITV was also lost.
A drop of 3% in the FTSE 100 in the year preceding the end of March was recorded.
Graeme Evans of Interactive Investor attributes the negative result of the market as a whole to fears of rising interest rates and inflation, added to the potential of a US/China trade war.
NMC Health is a private healthcare provider that is based in the UAE. Shares in the company have risen substantially since listing on the LSE in 2012, with the company now valued at more than £7 billion.
Micro Focus International is a software and information technology company that has seen it's share price more than halve in the last tax year as the company is buffeted by poor sales and a troubled asset integration scenario.
As always, it's important for your investments to be diversified. Holding too much of your overall investments in any one share could be dangerous.
Westminster Wealth Management can assist in helping you to navigate your financial future, and expert advice is valuable in complicated times just as much as in simple ones. Contact us today.
The value of investments and income from them may go down as well as up and you may not get back the original amount invested.
Information is based on our current understanding of taxation legislation and regulations which is subject to change.
Past performance is not a reliable indicator of future performance.
The best and worst performing FTSE 100 shares over the past tax year revealed