1. USD rises on more hawkish Fed comments

The dollar was higher against most of the major currencies on Monday, after Fed Vice Chair Stanley Fischer said the U.S. economy was close to hitting the central bank's targets for full employment and 2% inflation.

Fischer's speech was just the latest piece of hawkish rhetoric from top Fed officials. Last week, San Francisco Fed President John Williams, New York Fed Chief William Dudley and Atlanta Fed President Dennis Lockhart all said a September rate hike may be on the table.

Investors are pricing in a 15% chance of a rate hike by September, up from just 6% at the start of last week. December odds were at around 52%, compared to 46% on Friday.

2. Global stocks mixed on Monday

U.S. stock index futures pointed to a flat open on Monday morning, as investors looked ahead to this week's meeting of global central bankers in Jackson Hole, Wyoming, where Fed Chair Janet Yellen may provide insight on the rate outlook.

Meanwhile, European and U.K. stocks were slightly higher in mid-morning trade, as investors remained on edge ahead of the Federal Reserve's Jackson Hole meeting later this week, while keeping an eye on oil prices.

Earlier, Asian shares ended mostly lower, with traders hesitant to make big bets ahead of a speech from Federal Reserve chair Janet Yellen at Jackson Hole on Friday.

3. Gold sinks to 2-week lows

Gold prices were under pressure on Monday, falling to a two-week low as the U.S. dollar rallied amid indications the Federal Reserve could raise interest rates as early as next month.

Comex gold slumped to a session low of $1,335.40 a troy ounce, a level not seen since August 9. It was last at $1,337.35, down $8.85, or 0.66%.

The precious metal is sensitive to moves in U.S. rates, which lift the opportunity cost of holding non-yielding assets such as bullion, while boosting the dollar in which it is priced.

4. Nintendo rises

Shares in Nintendo got a 3% lift in Japan after its famed character Mario made a high-profile cameo during the Olympics closing ceremony.

Mario was shown jumping into a pipe in Japan before popping out in the Rio stadium in the unlikely form of Japanese Prime Minister Shinzo Abe.

Tokyo will host the 2020 Olympics, picking up the baton from Rio. The idea to put Mario center stage in Rio came from the Tokyo organizing committee, said Nintendo spokesman Yasuhiko Minagawa.

While most Asian markets closed on Monday with losses, the Nintendo gain helped lift the Nikkei by 0.3%.