Part A

 Nick Scali declined 0.9 per cent to $10.51 despite flagging a strong June half, after its net profit rose 90 per cent to $40.6 million in the six months ended December 31. Wilsons said while the result was largely in line with guidance, sales were 10 per cent below the broker's forecasts. Qantas shares edged up 0.2 per cent to $4.71 after signing a wet lease deal with Alliance Aviation for three E190 aircraft to commence operations in mid-2021 with options for Qantas to call on an additional 11 aircraft based on market conditions. The news helped push Alliance's shares up 9.4 per cent to $4.29. McInnes, W. ASX falls as AGL closes at a 13-year low: Equities. The Australian Financial Review. Feb 05, 2021. 

Required Using relevant theories, explain why Nick Scali share price declined while the Qantas share price increased with an even higher increase in the Alliance Aviation share price.