Featured Snippets Drop
On February 19, MozCast determined a remarkable drop (40% day-over-day) in SERPs with Included Bits, with no instant signs of healing. Here's a two-week view (February 10-23):.
Are we losing our minds?
After the year we have actually all had, it's always excellent to check our peace of mind. In this case, other information sets revealed a drop on the very same date, but the intensity of the drop varied significantly. I examined our STAT data throughout desktop inquiries (en-US only)-- over two million day-to-day SERPs-- and saw the following:.
While mobile SERPs in STAT revealed greater overall occurrence, the pattern was really comparable, with a 9% day-over-day-drop on February 19 and an overall drop of about 12% given that February 10. Note that, while there is significant overlap, the desktop and mobile information sets may consist of various search expressions. While the desktop data set is presently about 2.2 M daily SERPs, mobile is closer to 1.7 M.
Note that the MozCast 10K keywords are skewed (intentionally) towards shorter, more competitive expressions, whereas STAT consists of many more "long-tail" expressions. This explains the general greater prevalence in STAT, as longer expressions tend to include concerns and other natural-language queries that are most likely to drive Featured Snippets.
Why the big distinction?
What's driving the 40% drop in MozCast and, presumably, more competitive terms? While some modifications impact industry classifications similarly, the Featured Snippet loss showed a significant range of effect:.
Competitive healthcare terms lost more than two-thirds of their Included Snippets. It turns out that much of these terms had other prominent features, such as Medical Knowledge Panels. Here are some high-volume terms that lost Included Bits in the Health classification:.

lupus.
autism.fibromyalgia.
acne.While Financing had a much lower initial frequency of Featured Bits, Finance SERPs likewise saw enormous losses on February 19. Some high-volume examples include:.
pension.
threat management.shared funds.
roth individual retirement account.investment.
Like the Health classification, these terms have a Knowledge Panel in the right-hand column on desktop, with some fundamental details (mostly from Wikipedia/Wikidata). Again, these are competitive "head" terms, where Google was showing multiple SERP functions prior to February 19.
Both Health and Financing search expressions align carefully with so-called YMYL (Your Cash or Your Life) material locations, which, in Google's own words "... might potentially affect an individual's future joy, health, monetary stability, or security." These are locations where Google is clearly worried about the quality of the answers they supply.
What about passage indexing?
Could this be tied to the "passage indexing" update that rolled out around February 10? While there's a lot we still do not know about the effect of that update, and while that update impacted rankings and very likely impacted natural snippets of all types, there's no reason to believe that update would affect whether or not an Included Snippet is displayed for any provided query. While the timelines overlap a little, these events are more than likely different.
Is the bit sky falling?
While the 40% drop in Featured Snippets in MozCast appears to be real, the impact was mainly on much shorter, more competitive terms and particular market classifications. For those in YMYL classifications, it certainly makes sense to evaluate the effect on your rankings and search traffic.
Generally speaking, this is a typical pattern with SERP functions-- Google ramps them up over time, then reaches a threshold where quality begins to suffer, and after that reduces the volume. As Google ends up being more positive in the quality of their Included Snippet algorithms, they may turn that volume back up. I certainly don't expect Featured Snippets to vanish any time quickly, and they're still extremely common in longer, natural-language inquiries.
Consider, too, that some of these Included Bits might just have actually been redundant. Prior to February 19, someone looking for "shared fund" might have seen this Included Bit:.
Google is assuming a "What is/are ...?" question here, however "mutual fund" is an extremely ambiguous search that might have several intents. At the very same time, Google was already showing a Knowledge Chart entity in the right-hand column (on desktop), most likely from relied on sources:.

Why display both, especially if Google has issues about quality in a classification where they're extremely sensitive to quality issues? At the exact same time, while it might sting a bit to lose these Included Bits, think about whether they were truly providing. While this term may be great for vanity, how typically are individuals at the very beginning of a search journey-- who may not even understand what a mutual fund is-- going to convert into a client? In a lot of cases, they may be leaping straight to the Understanding Panel and not even taking the Included Snippet into account.

Whatever the impact, one thing stays real-- Google giveth and Google taketh away. Unlike losing a ranking or losing a Featured Snippet to a rival, there's extremely little you can do to reverse this type of sweeping modification. For websites in heavily-impacted verticals, we can just keep an eye on the situation and attempt to evaluate our new truth.
Update: Stop by word-count.
I realized that we might take a look at word-count in the STAT data to check the theory that shorter search queries (which are usually both more competitive and more uncertain) were hit harder by this update. Here's the breakdown of STAT's 2M desktop (en-US) keywords ...There's very little subtlety here-- 1-word inquiries were clobbered in this upgrade, 2-word queries dropped substantially greater than the STAT average, and 3+- word inquiries were struck much less. Why these queries were hit isn't as clear, but the impact on really brief queries is clear.