Apple wowed the debt markets on Tuesday with the largest ever bond deal for a non-financial institution.
Apple shares have hit their lowest levels in a year and half, after a supplier hinted at a slowdown in iPhone and iPad production.
An activist shareholder is demanding US technology giant Apple pay out more of its $137bn (£87bn) cash pile to investors.
Apple shares have fallen 12% at the start of US trading as investors took flight after the world's largest company reported weaker-than-expected iPhone sales.
Technology giant Apple saw shares dive 10% in after-hours trading, wiping $50bn off the market cap value, as its latest update to the market left analysts underwhelmed.
Shares in Apple fell to an 11-month low overnight after disappointing sales of its latest iPhone.
GLG's technology fund managers Philip Pearson and Anthony Burton have been adding substantially to their position in US giant Apple after a brutal sell-off recently saw it shed over 20% of its value.
The US technology sector has been "crushed" in recent weeks but remains on course for long-term gains, managers have insisted.
An alleged rogue trade in US technology giant Apple's shares has left a US brokerage fighting for survival.
Apple, the world's largest company, revealed profits in the fourth quarter missed analysts' estimates, prompting a share price drop of 1.5% in after-hours trading.