BLDRBuilders FirstSource

$52.86-59% 1Y
Latest close: a new 52-week lowOct 9, 2026what changed →

What is the market doing?

Mixed

No clear lean: nothing decisive, though in a downtrend (−39% vs 200-day).

1 to watch, 1 neutral, 1 without data
TrendDowntrendderived · Oct 9, 2026

In a downtrend, below its 50- and 200-day averages. Price is −39% vs its 200-day average.

Short interest8.1% of sharesFINRA · Sep 15, 2026

Heavily shorted, settled Sep 15, 2026, about a week of normal trading to cover. Up 14% since the previous count, up from 7.2% of shares outstanding three months ago.

Against the whole market›

Percentile against every name Ryufin tracks. Higher is better; the tick marks the middle of the market. Context, not one of the checks above.

1-year returnbottom 2% of the market
vs 200-day avgbottom 3% of the market

Where this answer is blind. Insider selling is often routine (taxes, diversification); only cluster buying is a strong tell.

How BLDR is trading

Builders FirstSource is −59% over the past year while the S&P 500 is +18%: 77 points behind the market.

−59%

1-year return · S&P 500 +18%

vs 200-day average
−39%

vs 200-day average · a clear downtrend

RSI (14)
31

RSI (14) · neutral

Below its 52-week high
59%

Below its 52-week high

Sep 17, 2024$52.86 – $201.83 · dashed line: 200-day averageOct 9, 2026
Details›
Last close2026-10-09
$52.86
1 monthS&P 500 +2.7%
−10%
1 yearS&P 500 +18%
−59%
5 yearsS&P 500 +88%
−1.3%
vs 50-day average$64.51
−18%
52-week high
$129.54
52-week low
$52.86
Annualised volatility
47%
Insider buying, net, 6 monthsForms 3/4/5 to 2026-10-08
−$391K
Calendar-year price return
YearReturn
2026 (year to date)−49%
2025−28%
2024−14%
2023+157%
2022−24%
2021+110%
2020+61%
2019+133%
2018−50%
2017+99%
Average return by calendar month, 2016–2026
MonthYearsPositiveAverage
Jan105 of 10+4.3%
Feb106 of 10+2.2%
Mar105 of 10−5.8%
Apr105 of 10+3.9%
May105 of 10+0.23%
Jun105 of 10+2.7%
Jul119 of 11+7.7%
Aug118 of 11+4.5%
Sep115 of 11−2.8%
Oct114 of 11−4.3%
Nov109 of 10+12%
Dec105 of 10+1.3%

End-of-day closes from IEX; the S&P 500 comparison uses SPY over the same window. Prices are a reference point, not a basis for trading decisions.