Interest Rates: Higher interest rates generally make fixed-income investments like preferred shares less attractive, decreasing demand and potentially lowering the price of FTS-PF.TO.

Fortis' Financial Performance: Fortis' overall profitability and creditworthiness directly impact the perceived safety of its preferred shares. Strong financial results typically boost investor confidence and increase demand.

Market Sentiment: General investor optimism or pessimism can influence the price of FTS-PF.TO. Positive market sentiment can drive prices up, while negative sentiment can push them down.

Dividend Yield Relative to Alternatives: The yield offered by FTS-PF.TO compared to other similar preferred shares or fixed-income investments affects its attractiveness. A higher yield makes it more appealing.

Redemption Provisions: The terms of redemption, including the dates and prices at which Fortis can redeem the shares, can influence investor demand and price.

Credit Rating: Changes in Fortis' credit rating by agencies like Moody's or S&P can significantly impact investor perception of risk and the price of FTS-PF.TO.

Supply and Demand: The basic economic principle of supply and demand applies. If there are more buyers than sellers, the price goes up; if there are more sellers than buyers, the price goes down.

Liquidity: The ease with which FTS-PF.TO can be bought and sold affects its price. Lower liquidity can lead to greater price volatility.

Sector Performance: The performance of the utility sector as a whole can impact FTS-PF.TO. A strong utility sector typically supports higher prices.

Inflation Expectations: Rising inflation expectations can erode the real return of fixed-income investments like preferred shares, potentially leading to lower prices.