Welcome to The S-Curve
Now you will be able to receive the latest announcements, product updates, and our insights on the mortgage market in real time.
The name of the blog, the S-Curve, is a reflection of our logo and the central feature of our prepayment model. S-curves are seen in nature in many phenomenon, from population growth to prepayment and default models. Our first S-curve, in the early 1990s, used the arctangent function, then piece-wise linear functions, and evolved over time to be more complex and vary by FICO, loan size and LTV. This evolution encapsulates both the timeless nature of fundamental relationships and constant innovation to describe them better over time.
We hope you find the information useful and we look forward to your feedback.
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Day of Service 2025EventsThe Andrew Davidson & Co., Inc. (AD&Co) DEI Day of Service 2025 provided the opportunity to have fun and support the greater NYC community at the same time. Hosted by the AD&Co DEI Committee, we first gathered at the AD&Co office to prepare backpacks for unhoused students in support of Volunteers of America® Greater New York’s Operation Backpack®. Essential school supplies are being distributed to Elementary, Middle, and High School students. This volunteer activity aligns closely with the AD&Co values of continuous learning and education, and I feel confident that this donation of school supplies will be impactful to these young students.
On to lunch, Jing Fong “has been a New York institution since 1978, specializing in dim sum and Cantonese cuisine.” But what is Dim Sum? As advised by blogger Justine Pang, “Dim sum is a Chinese cuisine, taken from the teahouse culture in Hong Kong and Guangdong Province; in which consist of small plates of Chinese food paired with a hot cup of tea, and accompanied with family and friends.” At one time, Jing Fong occupied a space with 800 seat capacity. The center of the table was filled with fresh, delicious food, and it spins on a lazy susan to allow for easy sharing.
The last stop of the day was to the Museum of Chinese in America (MOCA). The museum specializes in collecting practical, everyday items that reflect ordinary life, and the magazine exhibit was especially interesting.
The Herbalist
“In the early days of Chinese medicine in America, Chinese treatment for certain ailments was more effective than Western treatments and didn’t have side effects” - MOCA The Laundry
Laundry businesses have historically provided a stable and reliable income for many Chinese immigrants who faced exclusion and racism from many other industries. The World of Magazines
“Through magazine publishing, a vital form of mass media in the 1990s, Asian Americans editorialized issues central to their lives and depicted themselves in ways that were unimaginable before. Magazine Fever presents stories of Generation X magazines–how they were founded and sustained; how they captured the essence of multiculturalism and Generation X paradigms, and how they impacted the ways Asian American identity is understood today.” - MOCA It was great to experience Chinatown in Manhattan via food, history, and culture. I had the opportunity to purchase two books at MOCA and will follow both MOCA and Jing Fong on social media to continue to support future events!
The S-Curve Archives
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NewsMartin Luther King, Jr. was a great leader and inspirational speaker. His wisdom can serve as a guide for as long as we remember him. Andrew Davidson & Co would like to acknowledge a fraction of what he gave us with two relevant quotes that seem fitting in 2021.
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Thoughts
In the spring of 2019, National Association of Realtors® (NAR), together with financial-market experts Susan Wachter (Wharton) and Richard Cooperstein (Andrew Davidson & Co., Inc.) proposed completing the transition of Fannie Mae and Freddie Mac (Enterprises) into market utilities in a publication entitled “A Vision for Enduring Housing Finance Reform.” This work builds on Richard Cooperstein and Andrew Davidson’s 2017 paper
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Thoughts
Separating signal from noise is at the heart of what we do at AD&Co. One of the key tools we utilize for that purpose is a sophisticated set of model performance trigger reports. These monthly reports not only alert us to model drift but also point to possible causes for the drift.
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News
We proudly launched our new website on November 13th. As you familiarize yourself with the new look of ad-co.com, you will come to know the many new offerings we provide. Along with the new website, we have organized our products as a menu of models and applications for a wide range of investor appetites. Let us review the menu of our product offerings.
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News
Andrew Davidson & Co., Inc. (AD&Co), is proud to support Fite Analytics’ innovative cloud-native Mortgage-Backed Securities Analytics Service. The Fite Analytics solution incorporates AD&Co’s LoanDynamics models that provide forecasts of voluntary prepayments, defaults and losses that drive risk analytics across the mortgage-backed securities market with comprehensive coverage.
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News
We are thrilled to announce that Andrew Davidson & Co., Inc. has launched a new look for ad-co.com. Some of the exciting new features of this site include:
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A dynamic homepage highlighting the firm’s latest innovations, AD&Co client benefits, announcements, and Diversity, Equity and Inclusion efforts.
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