It_PNP 's_VBZ the_AT0 largest_AJS purchase_NN1 of_PRF Teslas_NN2 ever_AV0 by_PRP a_AT0 single_AJ0 buyer_NN1 ,_PUN and_CJC the_AT0 biggest_AJS move_NN1 into_PRP electric_AJ0 vehicles_NN2 by_PRP a_AT0 rental_NN1 car_NN1 company_NN1 ._SENT But_CJC even_AV0 CEO_NN1 Elon_NP0 Musk_NP0 was_VBD surprised_AJ0 by_PRP the_AT0 magnitude_NN1 of_PRF the_AT0 jump_NN1 ,_PUN which_DTQ pushed_VVD Tesla_NP0 's_POS market_NN1 value_NN1 up_AVP to_PRP $_NN0 1.01_CRD trillion_CRD ._SENT "_PUQ Strange_AJ0 that_CJT moved_VVD valuation_NN1 ,_PUN as_CJS Tesla_NP0 is_VBZ very_AV0 much_AV0 a_AT0 production_NN1 ramp_NN1 problem_NN1 ,_PUN not_XX0 a_AT0 demand_NN1 problem_NN1 ,_PUN "_PUQ Musk_NP0 said_VVD on_PRP Twitter_NN1 ._SENT Nonetheless_AV0 ,_PUN Musk_NP0 ,_PUN whose_DTQ net_AJ0 worth_NN1 of_PRF nearly_AV0 $_NN0 289_CRD billion_CRD makes_VVZ him_PNP more_AV0 valuable_AJ0 than_CJS ExxonMobil_NP0 ,_PUN cheered_VVD the_AT0 move_NN1 ._SENT "_PUQ Wild_AJ0 $_NN0 T1mes_NN2 !_SENT "_PUQ he_PNP boasted_VVD ._SENT Investors_NN2 are_VBB in_PRP celebration_NN1 mode_NN1 ,_PUN too_AV0 ._SENT The_AT0 S_ZZ0 &_NN1 P_ZZ0 500_CRD and_CJC Dow_NP0 both_AV0 hit_VVD all-time_AJ0 highs_NN2 on_PRP Monday_NP0 ,_PUN as_CJS Wall_NP0 Street_NP0 brushed_VVD off_AVP lingering_AJ0 concerns_NN2 about_PRP a_AT0 slowdown_NN1 in_PRP economic_AJ0 growth_NN1 ,_PUN higher_AJC inflation_NN1 and_CJC heavy_AJ0 debt_NN1 loads_NN2 in_PRP China_NP0 's_POS large_AJ0 real_AJ0 estate_NN1 sector_NN1 ._SENT But_CJC the_AT0 growing_AJ0 $_NN0 1_CRD trillion_CRD club_NN1 is_VBZ n't_XX0 necessarily_AV0 a_AT0 good_AJ0 thing_NN1 for_PRP markets_NN2 over_PRP the_AT0 long_AJ0 run_NN1 ._SENT Breaking_VVG it_PNP down_AVP :_PUN Five_CRD companies_NN2 in_PRP the_AT0 S_ZZ0 &_NN1 P_ZZ0 500_CRD —_PUN Apple_NN1 ,_PUN Microsoft_NP0 ,_PUN Google_NP0 parent_NN1 Alphabet_NN1 ,_PUN Amazon_NP0 and_CJC Tesla_NP0 —_PUN are_VBB now_AV0 worth_PRP a_AT0 collective_AJ0 $_NN0 9.3_CRD trillion_CRD ._SENT That_DT0 's_VBZ almost_AV0 23_CRD %_NN0 of_PRF the_AT0 benchmark_NN1 US_NP0 stock_NN1 index_NN1 's_POS total_AJ0 value_NN1 ._SENT Add_VVB in_PRP Facebook_NN1 ,_PUN which_DTQ is_VBZ worth_PRP almost_AV0 $_NN0 927_CRD billion_CRD ,_PUN and_CJC the_AT0 figure_NN1 rises_VVZ to_PRP 25_CRD %_NN0 ._SENT In_PRP January_NP0 2020_CRD ,_PUN Facebook_NP0 (_PUL FB_NP0 )_PUR ,_PUN Apple_NN1 (_PUL AAPL_NP0 )_PUR ,_PUN Amazon_NP0 (_PUL AMZN_NP0 )_PUR ,_PUN Microsoft_NP0 (_PUL MSFT_NP0 )_PUR and_CJC Google_NP0 (_PUL GOOGL_NP0 )_PUR accounted_VVN for_PRP 19_CRD %_NN0 of_PRF the_AT0 value_NN1 of_PRF the_AT0 S_ZZ0 &_NN1 P_ZZ0 500._CRD That_DT0 means_VVZ that_CJT increasingly_AV0 ,_PUN a_AT0 handful_NN1 of_PRF firms_NN2 have_VHB outsize_AJ0 influence_NN1 over_PRP the_AT0 index_NN1 —_PUN and_CJC therefore_AV0 the_AT0 direction_NN1 of_PRF financial_AJ0 markets_NN2 ._SENT In_PRP boom_NN1 times_NN2 ,_PUN that_DT0 might_VM0 not_XX0 seem_VVI like_PRP such_DT0 a_AT0 bad_AJ0 thing_NN1 ._SENT Big_AJ0 Tech_NN1 companies_NN2 (_PUL and_CJC now_AV0 Tesla_NP0 )_PUR have_VHB powered_VVN huge_AJ0 stock_NN1 market_NN1 gains_NN2 since_PRP spring_NN1 2020_CRD as_CJS they_PNP proved_VVD they_PNP could_VM0 still_AV0 earn_VVI billions_CRD of_PRF dollars_NN2 during_PRP a_AT0 pandemic_AJ0 ._SENT The_AT0 stock_NN1 market_NN1 rally_NN1 could_VM0 get_VVI another_DT0 boost_NN1 this_DT0 week_NN1 ,_PUN with_PRP earnings_NN2 from_PRP Alphabet_NN1 ,_PUN Apple_NN1 ,_PUN Amazon_NP0 and_CJC Microsoft_NP0 on_PRP tap_NN1 ._SENT But_CJC technology_NN1 stocks_NN2 are_VBB also_AV0 very_AV0 sensitive_AJ0 to_PRP changes_NN2 in_PRP interest_NN1 rates_NN2 ,_PUN which_DTQ central_AJ0 banks_NN2 are_VBB considering_VVG hiking_VVG to_TO0 curb_VVI inflation_NN1 ._SENT If_CJS Wall_NP0 Street_NP0 starts_VVZ to_TO0 dump_VVI shares_NN2 of_PRF Apple_NN1 or_CJC Amazon_NP0 ,_PUN that_DT0 could_VM0 generate_VVI a_AT0 sizable_AJ0 pullback_NN1 ._SENT The_AT0 big_AJ0 question_NN1 :_PUN Does_VDZ market_NN1 concentration_NN1 equal_AJ0 market_NN1 power_NN1 ?_SENT More_AV0 than_CJS anything_PNI else_AV0 ,_PUN the_AT0 answer_NN1 could_VM0 dictate_VVI the_AT0 stock_NN1 market_NN1 's_POS trajectory_NN1 in_PRP the_AT0 coming_AJ0 years_NN2 ,_PUN as_CJS policymakers_NN2 take_VVB more_AV0 aggressive_AJ0 steps_NN2 to_TO0 rein_VVI in_PRP the_AT0 biggest_AJS technology_NN1 firms_NN2 ,_PUN including_VVG through_PRP potential_AJ0 antitrust_NN1 action_NN1 ._SENT 
