The 93 Largest San Francisco Area's San Mateo County-Headquartered Companies Total Pretax Earnings Experienced a Very Sharp Negative Earnings Reversal, Going From an Increase of 19% in the First Quarter of 2020 To a Huge 42% Decline in the Second Quarter of 2020. The Trump Administration's Reputedly Strong US Economy Certainly Hasn't Hit the Key San Mateo County of the San Francisco Bay Area.

From a review of Company SEC filings and the Google Finance website, I found 93 Companies headquartered in San Francisco Area's San Mateo County with stock market caps of above $100 mil recently.  Of these 93 San Mateo County Companies, 86 or 92% of them had June 2020 second quarter ends, 6 had July 2020 second quarter ends and 1 had a May 2020 second quarter end.

The table below shows the Gold-Standard US GAAP Pretax Income (Loss) From Continuing Operations for the second and first quarters of both 2020 and 2019 for each of these superb 93 San Mateo County Companies located in the San Francisco Bay Area.

		US	US		US	US
		GAAP	GAAP		GAAP	GAAP
		Pretax	Pretax		Pretax	Pretax
		Income	Income		Income	Income
		(Loss)	(Loss)		(Loss)	(Loss)
		Second	Second		First	First
Companies Located in the San Francisco Bay Area		Quarter	Quarter		Quarter	Quarter
Those Companies HQd in San Mateo County		2020	2019		2020	2019
Stock Market Caps Above $100 Mil	City HQs	mils $	mils $		mils $	mils $
Essex Property Trust	San Mateo	92	98		329	126
Franklin Resources	San Mateo	270	414		103	493
Model N	San Mateo	(2)	(3)		(4)	(6)
Coupa Software	San Mateo	(47)	(30)		(15)	(20)
SVMK (Survey Monkey)	San Mateo	(23)	(19)		(24)	(18)
Guidewire Software	San Mateo	49	24		(36)	(13)
GoPro	San Mateo	(50)	(12)		(61)	(24)
Snowflake	San Mateo	(77)	(93)		(94)	(84)
Oracle	Redwood City	3,696	3,866		3,076	3,088
Electronic Arts	Redwood City	468	436		414	219
Equinix	Redwood City	178	191		149	160
Coherus Bioscioences	Redwood City	60	24		37	(20)
Rezolute	Redwood City	(5)	(20)		(5)	(20)
Soleno Therapeutics	Redwood City	(7)	(10)		(6)	(7)
Codexis	Redwood City	(6)	(6)		(8)	(5)
Acelrx Pharmaceuticals	Redwood City	(7)	(12)		(16)	(14)
Zuora	Redwood City	(20)	(21)		(17)	(20)
Talend S.A.	Redwood City	(21)	(18)		(18)	(18)
Revolution Medicines	Redwood City	(27)	(10)		(20)	(10)
Adverum Biotechnologies	Redwood City/Menlo Park	(29)	(15)		(23)	(14)
Box Inc	Redwood City	(7)	(36)		(25)	(36)
Nevro	Redwood City	(41)	(28)		(25)	(44)
Allakos	Redwood City	(39)	(19)		(28)	(20)
Guardant Health	Redwood City	(50)	(13)		(32)	(21)
Menlo Therapeutics	Redwood City	(168)	(19)		(40)	(15)
Sumo Logic	Redwood City	(12)	(14)		(23)	(15)
Facebook	Menlo Park	6,131	4,832		5,861	3,482
Robert Half International	Menlo Park	58	160		132	147
Corcept Therapeutics	Menlo Park	36	26		39	20
Exponent	Menlo Park	21	29		24	23
Pacific Biosciences of California	Menlo Park	(23)	(25)		1	(30)
TriplePoint Venture Growth BDC Corp	Menlo Park	21	24		(5)	11
Personalis	Menlo Park	(9)	(6)		(9)	(6)
Geron Corp	Menlo Park/ Foster City	(16)	(14)		(16)	(10)
Intersect ENT	Menlo Park	(23)	(11)		(18)	(11)
Rigel Pharmaceuticals	South San Francisco	(18)	(21)		21	(18)
Pliant Technologies	South San Francisco	(17)	(16)		11	(14)
Core-Mark Holding	South San Francisco / Westlake, TX	23	24		6	2
Vaxart	South San Francisco	(9)	(6)		(1)	(1)
CytomX Therapeutics	South San Francisco	(16)	(29)		(2)	(14)
Catalyst Biosciences	South San Francisco	(17)	(14)		(4)	(15)
CareDX	South San Francisco	(7)	(8)		(6)	(8)
ORIC Pharmaceuticals	South San Francisco	(11)	(6)		(9)	(6)
Kezar Life Sciences	South San Francisco	(10)	(9)		(10)	(8)
Akero Therapeutics	South San Francisco	(16)	(7)		(12)	(5)
Ideaya Biosciences	South San Francisco	(12)	(11)		(12)	(10)
Veracyte	South San Francisco	(11)	(2)		(12)	(2)
Harpoon Therapeutics	South San Francisco	(13)	(12)		(13)	(14)
Rapt Therapeuticals	South San Francisco	(12)	(11)		(13)	(9)
Applied Molecular Transport	South San Francisco	(15)	(7)		(15)	(5)
Cortexyme	South San Francisco	(18)	(9)		(17)	(6)
Fluidigm	South San Francisco	(14)	(15)		(17)	(25)
NGM Biopharmaceuticals	South San Francisco	(26)	(8)		(19)	(8)
Atreca	South San Francisco	(20)	(18)		(20)	(14)
Five Prime Therapeutics	South San Francisco	(17)	(34)		(20)	(35)
Sutro BioPharma	South San Francisco	30	(14)		(20)	(14)
Calithera Biosciences	South San Francisco	(20)	(24)		(24)	(24)
Prothena Corp plc	South San Francisco	(27)	(16)		(24)	(21)
Assembly Biosciences	South San Francisco	7	(19)		(27)	(27)
Unity BioTechnology	South San Francisco	(19)	(24)		(28)	(19)
Principia Biopharma	South San Francisco	11	7		(32)	(14)
Twist Bioscience	South San Francisco	(28)	(28)		(32)	(26)
Cytokinetics	South San Francisco	(41)	(32)		(39)	(29)
Alector	South San Francisco	(45)	(25)		(40)	(19)
Allogene Therapeutics	South San Francisco	(61)	(41)		(54)	(32)
Denali Therapeutics	South San Francisco	(59)	(59)		(57)	(39)
Portola Pharmaceuticals (Acquired by Alexion)	South San Francisco	NA	NA		(69)	(78)
MyoKardia	South San Francisco / Brisbane	(64)	(38)		(70)	(37)
Global Blood Therapeutics	South San Francisco	(53)	(57)		(73)	(49)
Atara Biotherapeutics	South San Francisco	(77)	(74)		(74)	(66)
Tricida	South San Francisco	(58)	(37)		(74)	(38)
Theravance BioPharma	South San Francisco	(63)	(40)		(83)	(73)
Annexon	South San Francisco	(12)	(9)		(12)	(9)
Nkarta	South San Francisco	(51)	(5)		(9)	(3)
Gilead Sciences	Foster City	(2,973)	2,410		2,003	2,350
Qualys	Foster City	27	19		22	16
QuinStreet	Foster City	2	3		14	(1)
Mirum Pharmaceuticals	Foster City	(23)	(14)		(21)	(6)
Vaxcyte	Foster City	(20)	(11)		(27)	(14)
Innoviva	Burlingame	118	56		95	49
Humanigen	Burlingame	(24)	(3)		(2)	(3)
Corvus Pharmaceuticals	Burlingame	(11)	(13)		(13)	(12)
Kindred Biosciences	Burlingame	24	(14)		(23)	(16)
ALX Oncology	Burlingame	(11)	(4)		(5)	(4)
Check Point Software Technologies Ltd	San Carlos	240	233		220	225
Oportun Financial Corp	San Carlos	(47)	19		(18)	20
Natera	San Carlos	(60)	(31)		(35)	(34)
Iovance Biotherapeutics	San Carlos				(70)	(37)
Cutera	Brisbane	(63)	(48)		(12)	(8)
Sangamo Therapeutics	Brisbane	(36)	(30)		(43)	(42)
Myovant Sciences Ltd	Brisbane	(32)	(68)		(65)	(75)
Aimmune Therapeutics	Brisbane	(69)	(63)		(86)	(54)
RingCentral	Belmont	1	(9)		(61)	(9)
Total all 93 San Mateo County Cos		6,528	11,348		10,465	8,781
… % Change From Prior Year Quarter		-42%			19%