Retention champions in South Dakota in 2025, ranked by loan count. Powered by ChatMMI — the only fully conversational AI experience for mortgage and real estate data.
As of May 28, 2026, the top 3 include Kyle Swiden (Plains Commerce Bank, NMLS #776910), Waylon Korkow (First International Bank & Trust, NMLS #1280134), and Dawn VanNieuwenhuyzen (Plains Commerce Bank, NMLS #21096).
Updated · Recorded mortgage transactions typically appear in this dataset approximately 22 days after the recording date.
| Rank | Loan officer | LO NMLS | Current Lender / Broker | Lender NMLS | Location | Retained Volume | Retained Loans | Retention Rate |
|---|---|---|---|---|---|---|---|---|
| #1 | Kyle Swiden | 776910 | Plains Commerce Bank | 463950 | Sioux Falls, SD | $1.2M | 5 | 35.7% |
| #2 | Waylon Korkow | 1280134 | First International Bank & Trust | 415142 | Sioux Falls, SD | $1.0M | 4 | 40.0% |
| #3 | Dawn VanNieuwenhuyzen | 21096 | Plains Commerce Bank | 463950 | Sioux Falls, SD | $481K | 2 | 16.7% |
| #3 | Ryan Spellerberg | 612404 | CHARTER WEST BANK | 466077 | Sioux Falls, SD | $647K | 2 | 10.5% |
| #5 | Timothy Wermers | 52738 | American Bank & Trust | 774689 | Sioux Falls, SD | $380K | 1 | 10.0% |
These rankings are powered by MMI's nationwide residential mortgage public record dataset. MMI collects mortgage transaction data from recording jurisdictions across the United States, with an average data latency of approximately 22 days from the recording date.
Transactions are matched to NMLS identifiers for loan officers, lenders, and brokers where applicable. MMI then deduplicates, normalizes, and validates this data to create an authoritative mortgage production dataset that powers MMI's analytics, recruiting, marketing, and intelligence products.
Rankings reflect recorded mortgage transactions available to MMI at the time of the last data refresh. Recent activity may continue to update as additional transactions are recorded and processed.
TopMortgageOriginators.com. Retention Champions by Loan Count — South Dakota (2025). Powered by MMI public record mortgage production data, accessed May 28, 2026. https://topmortgageoriginators.com/lo-leaderboard/south-dakota/top-retention-by-units/2025
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