NASDAQ:QLYS | Historical Stock Price | QUALYS, INC.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2012-09-28 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$10.21$18.78$34.53$63.48$116.73$214.632012-09-282026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$74.74$74.74260,400
2018-12-28$75.09$75.09207,400
2018-12-27$75.59$75.59268,300
2018-12-26$73.62$73.62333,600
2018-12-24$67.97$67.97141,000
2018-12-21$67.88$67.881,041,700
2018-12-20$70.78$70.78379,000
2018-12-19$72.83$72.83256,800
2018-12-18$74.27$74.27308,300
2018-12-17$71.26$71.26686,500
2018-12-14$79.94$79.94324,700
2018-12-13$81.62$81.62392,800
2018-12-12$81.09$81.09515,300
2018-12-11$77.46$77.46367,200
2018-12-10$77.52$77.52228,700
2018-12-07$75.65$75.65247,700
2018-12-06$78.29$78.29420,000
2018-12-04$76.53$76.53670,300
2018-12-03$81.39$81.39588,400
2018-11-30$78.76$78.76382,300
2018-11-29$77.17$77.17348,000
2018-11-28$76.90$76.90341,600
2018-11-27$73.49$73.49212,600
2018-11-26$74.43$74.43251,600
2018-11-23$72.51$72.51127,000
2018-11-21$72.00$72.00228,800
2018-11-20$70.89$70.89546,700
2018-11-19$69.21$69.21400,000
2018-11-16$74.69$74.69302,200
2018-11-15$74.49$74.49315,500
2018-11-14$71.83$71.83328,400
2018-11-13$72.10$72.10273,000
2018-11-12$72.15$72.15232,800
2018-11-09$74.53$74.53281,300
2018-11-08$76.63$76.63409,800
2018-11-07$76.35$76.35194,200
2018-11-06$72.61$72.61263,300
2018-11-05$72.85$72.85359,100
2018-11-02$74.83$74.83504,300
2018-11-01$74.55$74.55591,400
2018-10-31$71.24$71.241,090,600
2018-10-30$76.23$76.23507,900
2018-10-29$73.11$73.11232,000
2018-10-26$73.95$73.95304,400
2018-10-25$76.21$76.21279,700
2018-10-24$73.10$73.10295,700
2018-10-23$77.70$77.70306,400
2018-10-22$77.11$77.11407,500
2018-10-19$74.40$74.40375,700
2018-10-18$74.10$74.10372,800
2018-10-17$75.61$75.61189,100
2018-10-16$75.68$75.68273,400
2018-10-15$72.40$72.40332,800
2018-10-12$73.56$73.56414,000
2018-10-11$70.70$70.70449,300
2018-10-10$71.52$71.52684,300
2018-10-09$75.49$75.49784,000
2018-10-08$77.60$77.60702,600
2018-10-05$81.97$81.97376,500
2018-10-04$83.47$83.47295,000
2018-10-03$85.63$85.63206,400
2018-10-02$84.17$84.17303,000
2018-10-01$86.05$86.05227,200
2018-09-28$89.10$89.10169,100
2018-09-27$88.55$88.55163,500
2018-09-26$87.50$87.50210,100
2018-09-25$89.85$89.85334,400
2018-09-24$87.70$87.70281,400
2018-09-21$86.80$86.80638,800
2018-09-20$87.35$87.35307,600
2018-09-19$87.95$87.95279,400
2018-09-18$90.95$90.95238,600
2018-09-17$90.40$90.40319,800
2018-09-14$94.60$94.60149,300
2018-09-13$94.85$94.85183,900
2018-09-12$95.35$95.35324,800
2018-09-11$94.20$94.20287,200
2018-09-10$92.60$92.60282,700
2018-09-07$90.55$90.55417,400
2018-09-06$89.70$89.70221,700
2018-09-05$88.65$88.65373,000
2018-09-04$92.15$92.15179,400
2018-08-31$91.05$91.05307,100
2018-08-30$89.05$89.05273,500
2018-08-29$91.00$91.00277,000
2018-08-28$91.50$91.50256,500
2018-08-27$91.25$91.25389,400
2018-08-24$90.05$90.05336,900
2018-08-23$87.40$87.40378,300
2018-08-22$87.30$87.30320,600
2018-08-21$85.10$85.10401,200
2018-08-20$85.80$85.80278,100
2018-08-17$85.75$85.75304,500
2018-08-16$85.75$85.75357,900
2018-08-15$84.50$84.50344,500
2018-08-14$85.70$85.70314,200
2018-08-13$85.50$85.50349,900
2018-08-10$88.00$88.00292,600
2018-08-09$88.45$88.45294,000
2018-08-08$88.25$88.25342,500
2018-08-07$88.05$88.05346,900
2018-08-06$87.50$87.50321,500
2018-08-03$85.15$85.15387,400
2018-08-02$86.15$86.15489,200
2018-08-01$85.05$85.05880,000
2018-07-31$87.10$87.10695,100
2018-07-30$88.30$88.30515,800
2018-07-27$90.45$90.45596,800
2018-07-26$95.10$95.10427,900
2018-07-25$96.80$96.80294,000
2018-07-24$93.60$93.60471,100
2018-07-23$97.05$97.05224,800
2018-07-20$97.05$97.05324,900
2018-07-19$96.35$96.35202,800
2018-07-18$95.95$95.95162,100
2018-07-17$94.70$94.70275,800
2018-07-16$92.75$92.75201,000
2018-07-13$93.35$93.35217,900
2018-07-12$94.40$94.40355,100
2018-07-11$90.60$90.60193,900
2018-07-10$89.10$89.10192,500
2018-07-09$89.20$89.20277,300
2018-07-06$89.30$89.30258,300
2018-07-05$88.05$88.05219,100
2018-07-03$86.50$86.5099,400
2018-07-02$85.90$85.90232,700
2018-06-29$84.30$84.30259,600
2018-06-28$85.00$85.00298,600
2018-06-27$83.45$83.45424,100
2018-06-26$88.70$88.70345,500
2018-06-25$87.10$87.10513,500
2018-06-22$88.80$88.80841,100
2018-06-21$94.80$94.80355,000
2018-06-20$95.90$95.90326,200
2018-06-19$96.20$96.20416,800
2018-06-18$97.05$97.05397,100
2018-06-15$95.50$95.50815,900
2018-06-14$94.80$94.801,250,800
2018-06-13$89.10$89.10478,400
2018-06-12$88.60$88.60615,000
2018-06-11$85.45$85.45577,800
2018-06-08$81.75$81.75330,000
2018-06-07$79.40$79.40323,800
2018-06-06$80.65$80.65363,900
2018-06-05$80.85$80.85294,000
2018-06-04$79.85$79.85366,600
2018-06-01$78.10$78.10195,900
2018-05-31$76.95$76.95278,300
2018-05-30$78.10$78.10318,000
2018-05-29$76.70$76.70289,300
2018-05-25$74.60$74.60175,300
2018-05-24$75.10$75.10182,500
2018-05-23$73.60$73.60338,200
2018-05-22$73.05$73.05320,700
2018-05-21$76.50$76.50180,600
2018-05-18$77.30$77.30137,800
2018-05-17$76.95$76.95165,600
2018-05-16$76.55$76.55140,100
2018-05-15$76.40$76.40234,000
2018-05-14$75.60$75.60254,800
2018-05-11$77.30$77.30142,400
2018-05-10$78.60$78.60195,800
2018-05-09$77.50$77.50244,000
2018-05-08$77.75$77.75289,300
2018-05-07$75.95$75.95285,500
2018-05-04$74.30$74.30230,100
2018-05-03$73.95$73.95354,400
2018-05-02$75.03$75.03797,300
2018-05-01$77.30$77.30390,800
2018-04-30$76.95$76.95358,400
2018-04-27$78.05$78.05353,200
2018-04-26$78.85$78.85200,300
2018-04-25$77.20$77.20478,700
2018-04-24$79.00$79.00348,800
2018-04-23$81.30$81.30308,900
2018-04-20$81.55$81.55321,800
2018-04-19$82.75$82.75441,800
2018-04-18$84.45$84.45463,600
2018-04-17$82.85$82.85697,100
2018-04-16$78.35$78.35311,000
2018-04-13$76.95$76.95184,500
2018-04-12$77.70$77.70141,600
2018-04-11$77.50$77.50192,100
2018-04-10$76.10$76.10185,300
2018-04-09$74.35$74.35196,700
2018-04-06$74.05$74.05278,100
2018-04-05$76.05$76.05231,600
2018-04-04$74.90$74.90216,900
2018-04-03$73.10$73.10208,200
2018-04-02$71.85$71.85220,300
2018-03-29$72.75$72.75263,700
2018-03-28$71.15$71.15272,500
2018-03-27$72.80$72.80247,000
2018-03-26$75.15$75.15320,500
2018-03-23$73.10$73.10279,900
2018-03-22$74.55$74.55283,500
2018-03-21$76.85$76.85194,800
2018-03-20$76.65$76.65391,900
2018-03-19$74.80$74.80372,100
2018-03-16$74.45$74.451,078,400
2018-03-15$76.30$76.30359,800
2018-03-14$77.10$77.10420,700
2018-03-13$77.25$77.25257,100
2018-03-12$78.30$78.30322,900
2018-03-09$78.45$78.45460,400
2018-03-08$77.70$77.70237,600
2018-03-07$77.60$77.60298,100
2018-03-06$77.35$77.35317,900
2018-03-05$77.60$77.60298,600
2018-03-02$77.50$77.50288,500
2018-03-01$74.80$74.80376,900
2018-02-28$74.05$74.05400,400
2018-02-27$76.35$76.35368,700
2018-02-26$76.25$76.25327,800
2018-02-23$75.20$75.20314,400
2018-02-22$73.15$73.15233,400
2018-02-21$72.15$72.15224,500
2018-02-20$72.25$72.25325,200
2018-02-16$72.25$72.25487,400
2018-02-15$71.20$71.20445,800
2018-02-14$67.95$67.95504,900
2018-02-13$67.30$67.30893,000
2018-02-12$62.60$62.60798,500
2018-02-09$59.90$59.90459,100
2018-02-08$58.30$58.30205,000
2018-02-07$59.95$59.95178,300
2018-02-06$60.20$60.20280,100
2018-02-05$59.95$59.95215,000
2018-02-02$62.15$62.15111,700
2018-02-01$63.00$63.00165,000
2018-01-31$62.50$62.50182,600
2018-01-30$62.80$62.80172,100
2018-01-29$63.70$63.70177,300
2018-01-26$64.30$64.30212,900
2018-01-25$63.70$63.70199,800
2018-01-24$63.35$63.35191,600
2018-01-23$64.45$64.45248,000
2018-01-22$64.80$64.80115,300
2018-01-19$64.35$64.35128,700
2018-01-18$64.10$64.10149,400
2018-01-17$64.75$64.75119,800
2018-01-16$63.60$63.60198,600
2018-01-12$63.90$63.90121,300
2018-01-11$63.70$63.70130,700
2018-01-10$62.55$62.55148,300
2018-01-09$62.95$62.95171,900
2018-01-08$64.20$64.20219,700
2018-01-05$63.15$63.15234,800
2018-01-04$62.90$62.90204,400
2018-01-03$61.80$61.80221,300
2018-01-02$61.10$61.10256,000