By Ben Eisen, MarketWatch

NEW YORK (MarketWatch) -- Treasury prices slipped Tuesday, but still notched their third straight quarter of gains, underscoring the surprising fall in interest rates so far this year.

The 10-year Treasury note (10_YEAR) yield, which falls as prices rise, fell a basis point this quarter, and nearly 52 basis points so far this year, its largest three-quarter fall since the beginning of 2012.

The yield rose 1.5 basis points on the day to 2.504%, according to Tradeweb.

The quarter's gains weren't helped by a weak September, which saw the benchmark yield rise nearly 16 basis points. Read more: The bond market's terrible September in one chart

Treasury prices meandered throughout Tuesday's session, ultimately losing steam despite a series of weaker data:

Market participants also speculated that Pimco was selling some holdings to meet redemptions, as investors pulled money out of the world's largest bond-fund manager. The onslaught of redemptions come in the wake of the high profile departure of chief investment officer Bill Gross. Pimco $3.1 billion Total Return exchange-traded fund (BOND) had a record $446.5 billion in outflows on Friday, though outflows slowed to $98 million on Monday. Also read: This year at Pimco, measured by fund flows.

The Pimco news pushed U.S. Treasurys weaker on Friday, though the market recovered Monday.

The rest of the week will feature a series of high-profile economic data.

"The market's attention will now shift to Friday's employment release," said Ian Lyngen, senior rates strategist at CRT Capital Group, in a note. Economists polled by MarketWatch expect that the U.S. added 220,000 jobs in September.

The 30-year bond (30_YEAR) yield rose 3 basis point to 3.212% and the 5-year note (5_YEAR) yield fell slightly basis point to 1.771%.

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