Thank you Gianluca -- your solution worked visually, but not in FinancialData[] . I used FinancialData[] to download a group of stock tickers. A list appears with tickers with invisible quotation marks. I triple click a ticker with the invisible quotation marks and paste it and the quotation marks appear where pasted. The paste works in FinancialData[] getting the stock price and the list of tickers with invisible quotation marks works equally well.

list ={"NASDAQ:ASTC", "NASDAQ:ATRO", "NASDAQ:AVAV", "NASDAQ:AXON", \ "NASDAQ:BYRN", "NASDAQ:CODA", "NASDAQ:EH", "NASDAQ:ESLT", \ "NASDAQ:ISSC", "NASDAQ:IVAC", "NASDAQ:KTOS", "NASDAQ:MRCY", \ "NASDAQ:POWW", "NASDAQ:POWWP", "NASDAQ:RADA", "NASDAQ:SWBI", \ "NASDAQ:TATT", "NASDAQ:VSEC", "NASDAQ:VTSI", "NASDAQ:WWD", \ "NYSE:AIR", "NYSE:AIRI", "NYSE:AJRD", "NYSE:BA", "NYSE:BWXT", \ "NYSE:CAE", "NYSE:CVU", "NYSE:DCO", "NYSE:ERJ", "NYSE:FLY", \ "NYSE:GD", "NYSE:HEI", "NYSE:HEI-A", "NYSE:HII", "NYSE:HXL", \ "NYSE:KAMN", "NYSE:LHX", "NYSE:LMT", "NYSE:MOG-A", "NYSE:MOG-B", \ "NYSE:NOC", "NYSE:NPK", "NYSE:PKE", "NYSE:RGR", "NYSE:RTX", \ "NYSE:SIF", "NYSE:SPCE", "NYSE:SPR", "NYSE:TDG", "NYSE:TGI", \ "NYSE:TXT", "NYSE:UAVS", "NYSE:VEC"}

Copy -> Paste the invisible quotation mark appear here, but not in the workbook. I will try three lists. List1 -- WL see as symbols and only errors in FinancialData[], List2 -- using your code, WL see as strings only if I copy the quotation marks, if I double the ticker, the quotation marks are not captured. If I triple click the ticker, the whole line is highlighted. If I copy the ticker and quotation marks into FinancialData I get the stock price, but if I input the list of tickers, FinancialData does not recognize the list as tickers. List3 -- if I manually type quotation marks around each and every ticker without error, than FinancialData will recognize the list as tickers and I get their current price.

In[66]:= list1 = {AA, AAL, AAPL, ABNB, ABUS, ADI, AEO, AFRM, AMC, AMD, AMZN, ANY}

Out[66]= {AA, AAL, AAPL, ABNB, ABUS, ADI, AEO, AFRM, AMC, AMD, AMZN, ANY}

In[67]:= FinancialData[list1]

During evaluation of In[67]:= FinancialData::notent: AA is not a known entity, class, or tag for FinancialData. Use FinancialData[] for a list of entities.

During evaluation of In[67]:= FinancialData::notent: AAL is not a known entity, class, or tag for FinancialData. Use FinancialData[] for a list of entities.

During evaluation of In[67]:= FinancialData::notent: AAPL is not a known entity, class, or tag for FinancialData. Use FinancialData[] for a list of entities.

During evaluation of In[67]:= General::stop: Further output of FinancialData::notent will be suppressed during this calculation.

Out[67]= {Missing["NotAvailable"], Missing["NotAvailable"], Missing["NotAvailable"], 
 Missing["NotAvailable"], Missing["NotAvailable"], Missing["NotAvailable"], 
 Missing["NotAvailable"], Missing["NotAvailable"], Missing["NotAvailable"], 
 Missing["NotAvailable"], Missing["NotAvailable"], Missing["NotAvailable"]}

In[68]:= list2 = Map[ToString, list1] // InputForm

Out[68]//InputForm=
{"AA", "AAL", "AAPL", "ABNB", "ABUS", "ADI", "AEO", "AFRM", "AMC", "AMD", 
 "AMZN", "ANY"}

In[69]:= FinancialData[list2]

During evaluation of In[69]:= FinancialData::notent: {"AA", "AAL", "AAPL", "ABNB", "ABUS", "ADI", "AEO", "AFRM", "AMC", "AMD", <<2>>} is not a known entity, class, or tag for FinancialData. Use FinancialData[] for a list of entities.

Out[69]= Missing["NotAvailable"]

In[70]:= list3 = {"AA", "AAL", "AAPL", "ABNB", "ABUS", "ADI", "AEO", "AFRM", "AMC", 
  "AMD", "AMZN", "ANY"}

Out[70]= {"AA", "AAL", "AAPL", "ABNB", "ABUS", "ADI", "AEO", "AFRM", "AMC", "AMD", \
"AMZN", "ANY"}

In[71]:= FinancialData[list3]

Out[71]= {Quantity[47.5099983215332, "USDollars"], 
 Quantity[20.200000762939453`, "USDollars"], 
 Quantity[154.07000732421875`, "USDollars"], Quantity[166., "USDollars"], 
 Quantity[3.869999885559082, "USDollars"], 
 Quantity[168.80999755859375`, "USDollars"], 
 Quantity[26.899999618530273`, "USDollars"], 
 Quantity[92.05999755859375, "USDollars"], 
 Quantity[48.52000045776367, "USDollars"], 
 Quantity[106.1500015258789, "USDollars"], 
 Quantity[3484.159912109375, "USDollars"], 
 Quantity[7.190000057220459, "USDollars"]}

How would I code in the invisible quotation marks that FinancialData will recognize as tickers????

To my extreme annoyment, in StandardForm the quote marks are invisible, but they are there:

lisVol = {AA, AAL, AAPL, ABNB};
Map[ToString, lisVol] // InputForm

To my further annoyment, when copying and pasting strings, sometimes the invisible quotes are copied, sometimes not.