You are analysing a section of Youtube transcript from a financial channel, spot the companies/tickers discussed, if any. 
Requirements:
1. Present the result in json format
2. Return None if no company/ticker is found

Output format:

[
  {
    "company": "company1",
    "ticker": "ticker1"
  },
{
    "company": "company2",
    "ticker": "ticker2"
  },
{
    "company": "company3",
    "ticker": "ticker3"
  }
]

Input:

"the one standout company that hasn't that had ha growth is apple, in terms of their head count. their head count was only 19%. and i bring that up as a case study and i think what will be a guide look for other tech companies. ultimately when you put this together, it implies there's still another 15 to 20% of head count reductions for these big tech companies in the next three to six months. "

Output:  Your response should contain less than 500 words.
user