Which of the following scenarios describes activities that are disallowed under the NASAA Model Rules?

I. Broker-dealer Anon observes that a client placed a stop loss order to sell her 1,500 shares of Amazon.com stock for $131 when the stock was selling for $134. Anon sold the stock for $133 when it started to fall during the day and credited the client’s account with $131 per share when stock dropped further to $129 a share.

II. Penny is an agent with Broker-dealer Anon. She recently recommended that a client buy a stock that Penny thought would do well. As it turned out, Penny was wrong, and she offers to refund the commission that the client paid her.

III. Broker-dealer Anon is part of the selling group of a hot new IPO. As such, the firm purchases 50% of the shares for its own portfolio and sells the remainder to the public.