Among the best stories from Retirement Daily for Jan. 13 - 17: Portfolio diversification, easy financial resolutions, long-term care insurance and healthcare and estate planning documents.

(Editor's note: We hope you have a good weekend; Retirement Daily will be back Tuesday, after the Martin Luther King Jr. Day holiday, with new retirement research and helpful tips to start tax-prep season.)

Five Signs of Fake Portfolio Diversification

Investors throw out lots of platitudes about their portfolios being diversified and financial literature often contains allusions to diversification, adviser Eric Weigel writes in a guest column this week. "Understanding portfolio diversification is not an academic nicety. Proper diversification is crucial for growing your wealth and managing through the inevitable ups and downs of financial markets." In Five Signs of Fake Portfolio Diversification Weigel explains why diversification is essential to your portfolio health and how to avoid fake signs of diversification.

And in case you missed them, here are more great stories from Retirement Daily:

5 Easy Financial Resolutions for 2020

It's a new year, a new decade and a new opportunity to put your best financial foot forward in 2020. Jeanette Pavini writes that she has done thousands of money-saving news stories over the past 20 years, and picked up some very helpful tips along the way. Here are five of her favorite strategies to help create a better financial future.

Planning for Retirement? Don't Forget to Consider Long-Term Care Costs

Adviser Jessica Landis talks about new and evolving options for managing long-term care costs, and also busts some misconceptions about LTC insurance.

5 Essential Healthcare and Estate Planning Documents You Need

Adviser Timothy Bogert details five essential healthcare and estate planning documents that will bring awareness of your wishes and goals to your family and your team of advisers, making transitions easier for everyone.

Ask Bob: Medicare IRMAA Changes

Question: My mother received a Medicare Income-Related Monthly Adjustment Amount notice of increase recently. Does the fact that she is paying $96,000 in assisted living costs per year now have any bearing on her income? We don't take any medical deductions.

New Retirement Research

Here are some of the latest reports, surveys, and studies related to retirement, including research into extremes of frugality, long-term care, and longevity and its opportunities.

Briefing: Latest Retirement News

Here's the latest from the world of retirement-related news: Fraud risks, simplifying retirement withdrawals, annuities, and retirement-income expectations.