CBL is under scrutiny from regulators, who are looking into four of the REIT's loans. Here's how the rest of the REIT sector is performing.

WINNER: NexPoint Residential

Monday Open: $15.32/share

Friday Close: $16.81/share

Change: 9.72%

NexPoint Residential led the REIT world this week, seeing nearly double-digit gains. The residential REIT has come far since its low of $10.82/share during the early year market turmoil.

WINNER: DiamondRock Hospitality

Monday Open: $8.97/share

Friday Close: $9.60/share

Change: 7%

Diamondrock saw nearly half of its weekly gain on Wednesday alone, rising 3.44%. The lodging REIT has a 52-week high of $13.86/share while its low is $7.28/share over the same period.

WINNER: Host Hotels & Resorts

Monday Open: $15.40/share

Friday Close: $16.44/share

Change: 6.75%

Host Hotels rounds out our top three performers, having received an average price target of $18.16 on Friday. The Maryland-based lodging REIT recently sold off three non-core hotels for $175M—adding to the $1.2B total of non-core assets it has shed in the past year.

LOSER: NorthStar Realty Finance

Monday Open: $13.56/share

Friday Close: $12.18/share

Change: -10.17%

NorthStar was our biggest loser for the week, despite receiving a "Buy" rating from analysts in the beginning of the week. The REIT recently inked a deal to combine with NorthStar Asset Management and Colony Capital to make a $58B REIT.

LOSER: WP Glimcher

Monday Open: $11.63/share

Friday Close: $10.66/share

Change: -8.3%

WP Glimcher erased nearly all of its gains from last week, when it had a spot on our "Winners" list. The decline comes after rumors of a possible merger with Kite Realty were debunked early in the week.

LOSER: Global Net Lease

Monday Open: $8.50/share

Friday Close: $7.91/share

Change: -6.9%

Global Net Lease rounds out our worst performers, as it fell below the $7.95/share where it started 2016. The retail REIT's struggles come while as many as $47.5B retail-backed loans are coming due in coming months.