PowerSeller MBS Access
Mortgage-backed-securities Pricing for your Secondary Desk
Live market view in your desktop or mobile browser, CSV/XLSX view/download in the PowerSeller MBS Files web portal, Excel via PowerQuery connection to our web API, and inside the PowerSeller desktop application via connection to our web API (desktop plug-in required).
Institutional TBA MBS and Treasury pricing from our exclusive data partner.
MBS Access is built for the people who price loans, hedge the pipeline, and mark positions. It puts the numbers where the desk already works: a live market view in the browser, CSV/XLSX and Excel via our RESTful web API, or the PowerSeller application it has used for years.
The Live Market View

One screen. One login. Every named user on your desk.
Current coupons against the 10-year. The Treasury curve and its spreads. Bid/ask, swap and roll by coupon. Intraday charts through the trading day.
- Live MBS prices: Bid, ask and mid prices from three sources across FNCL (UMBS 30), G2SF (GNMA II 30) and FNCI (UMBS 15), covering four settlement months.
- Rates and spreads: Treasury prices, yields, durations, curve spreads, SOFR swaps and swap spreads in real time, against both the 3pm and 4:45pm marks.
- MBS analytics: Trading volumes, last trade price, current coupon yields, basis spreads, coupon swaps and cross-market product swaps as the market moves.
Sample data shown.
Market Intelligence
Know what’s coming. Hear what’s moving the market.
Econ Monitor
Today’s and upcoming key number releases, on one calendar.
- Plan around the numbers: Time rate-sheet changes and hedge adjustments around the releases that move MBS.
- See the surprise at a glance: The actual, the consensus and the previous figure sit side by side for each release.
- More than the data: Fed speeches and Treasury auctions are on the same calendar.
- Cut the noise: Filter by country, impact and category to see only what matters to your desk.


Live News & Chat
Market color and conversation with the dataQollab team and other users.
- Know why the market moved: The News channel covers what moved TBAs, spreads and Treasuries, and what is coming next.
- Ask the MBS specialists: Chat directly with the dataQollab team, whose focus is the MBS market.
- Compare notes: Community Chat connects you with other users of the platform.
- Right where you work: News and chat open from the same screen as your prices.
The Econ Monitor and Live News & Chat are included for every named user.
What you get
On the screen
For every named user
Live market screen
Current coupons, the Treasury curve, spreads and intraday charts — through the trading day.
Hourly snapshots
MBS pricing snapshots through the trading day.
Daily mark files
End-of-day marks, delivered every trading day.
One account per person
One MBS Access account covers the live market view and the web portal, and issues that person their own API key for Excel. The Desktop App connects on the organization’s key.
For your organization
Pooled across the desk
On-demand pulls
MBS and Treasury pricing on demand — pooled for your organization, and growing with every seat.
Shared files
Retention and a full access audit trail.
Straightforward billing
Per named user, per period — on one invoice for the organization.
Professional Support
Reach out to us via email or phone. We're happy to help!
Pricing
$750 per named user, per month
Current PowerSeller Desktop clients
The MBS Values files you receive by email continue — nothing to sign up for; we set it up with you.
The PowerSeller Desktop App also has a plug-in that pulls TBA MBS and Treasury pricing into your database on demand — every user of the desk benefits from the data it imports.
The MBS Access Plug-In for the Desktop App is $110 a month per organization, plus a one-time $300 installation and configuration fee.
Who we are
PowerSeller has served secondary-marketing desks for more than 25 years and is a member of the Mortgage Bankers Association.
Proudly serving these partners and many more!
Talk to us about MBS Access
Contact us for a personalized meeting








