Waterfall Forensics.

Prime hybrid ARM RMBS

Wells Fargo Mortgage Backed Securities 2006-AR5 Trust

424B5 filed 2006-03-23, acc 0001193125-06-061638

machine-encoded from the prospectus by the extraction pipeline and tied out over 9 periods (2006-04-25 to 2006-12-26); not yet expert-verified

Backtested periods

9

2006-04-25 to 2006-12-26

Comparison points within $1

96.6%

297 points

Max principal delta

$0.25

interest $2.80 · balance $0.25

What the encoder found in the filings

  • B-6: draft face 2,976,638.00 -> reported 2,976,638.15 (pinned from the remittance Original Balance)
  • group 1 has 3 senior classes (I-A-1, I-A-2, I-A-R); assumed pro rata, but the contract may pay them as components — check the tie-out
  • group 2 has 2 senior classes (II-A-1, II-A-2); assumed pro rata, but the contract may pay them as components — check the tie-out
  • class names aligned across report formats: B1->B-1, B2->B-2, B3->B-3, B4->B-4, B5->B-5, B6->B-6, I-A1->I-A-1, I-A2->I-A-2, I-AR->I-A-R, II-A1->II-A-1, II-A2->II-A-2

Capital structure · original faces

I-A-1
$422,021,000.00
I-A-2
$19,351,000.00
I-A-R
$100.00
II-A-1
$668,462,000.00
II-A-2
$30,651,000.00
B-1
$19,643,000.00
B-2
$11,905,000.00
B-3
$7,738,000.00
B-4
$4,762,000.00
B-5
$2,976,000.00
B-6
$2,976,638.15

viridian = senior (per-pool) · burgundy = cross-collateralized subordinates

Worst remaining deltas · computed vs reported

interest

2006-06-26II-A-1+2.80
2006-11-27II-A-1+1.97
2006-08-25I-A-1-1.69
2006-08-25II-A-1-1.56
2006-06-26I-A-1+1.51

principal

2006-04-25I-A-1-0.25
2006-04-25II-A-1+0.11
2006-05-25I-A-1+0.01
2006-12-26I-A-1-0.01
2006-04-25B-6-0.01

ending balance

2006-04-25I-A-1+0.25
2006-05-25I-A-1+0.24
2006-06-26I-A-1+0.23
2006-09-25I-A-1+0.23
2006-07-25I-A-1+0.23