J.P. Morgan & Co. said Thursday that it had agreed to acquire a 20%  interest in Archipelago, one of a new breed of networks that is bringing   rapid change to securities trading processes.   
The dollar amount to be invested in Archipelago Holdings LLC of Chicago  was not disclosed. The Morgan investment would follow similar ones by   Goldman Sachs Group and E-Trade Group, indicating the high level of   interest in such electronic communications networks, or ECNs, from the   investment banking community.       
  
J.P. Morgan has a history of participating in trading and clearing  infrastructures and sees its involvement in Archipelago as part of an   effort "to pull a fragmented marketplace together," said Robert C. Gasser,   the New York banking company's head of U.S. equity trading.     
Archipelago was one of the first four ECNs to gain Securities and  Exchange Commission approval in January 1997, and such entities now account   for 30% of Nasdaq activity.   
  
They pose a challenge to traditional trade-execution methods by  bypassing the market makers who profit from pricing spreads. 
In competition with other ECNs-the largest are the Reuters Group  subsidiary Instinet and Island ECN Inc.-Archipelago touts its execution   capabilities and says it is the only one with major investors from both the   institutional and retail financial service sectors. It said its average   daily volume has more than doubled since December.       
J.P. Morgan regards Archipelago as offering the best execution for  clients in terms of price, speed, and size of orders, said Mr. Gasser. 
  
In the same technological vein, Morgan announced earlier this week that  it and PricewaterhouseCoopers had developed and launched a protocol to   support derivatives trading over the Internet. Morgan also had a pioneering   role in developing and spreading its methodology for measuring market risk,   known as RiskMetrics.       
The explosion of technology has caused the equity marketplace to become  fragmented, Mr. Gasser said. The "velocity and volume" supported by the   Internet, in addition to free information delivery and seamless   communication, "have made it impossible for humans to intermediate the way   they used to."       
As fast as they are growing, ECNs face challenges in displacing the old  way of doing things. One of these is creating liquidity, said James Marks,   electronic commerce analyst at Deutsche Bank Alex. Brown. ECNs work best   with high-volume stocks that can quickly find matches for executing orders,   he said.       
When market makers are present as intermediaries, they can create  liquidity by taking a long or short position in a stock before a match is   found. For less liquid stocks, electronic order-matching systems would be   forced to route the order away from an ECN to a human.     
  
Mr. Marks said that, compared with Instinet or Island, Archipelago does  not have the volume to generate sufficient liquidity. 
He wondered why Morgan and its investment management affiliate American  Century Cos., which will be contributing a fourth of the 20% stake, chose   Archipelago. He called the move "highly speculative."   
Mr. Gasser said Archipelago was chosen for its open architecture that  allows for communication outside of the ECN. He contended that this lets it   tap liquidity from other sources, including other ECNs like Instinet.   
J.P. Morgan's agreement with Archipelago follows one it announced in May  to invest in a United Kingdom ECN, Tradepoint Financial Networks PLC.   Morgan and Archipelago were part of a consortium-also including Instinet,   Morgan Stanley Dean Witter & Co., and Warburg Dillon Read-planning to   acquire a majority interest in Tradepoint.       
The derivatives protocol it announced this week-Financial Products  Markup Language, or FPML-would provide an "electronic definition" that   could mark the start of a new era of Internet-based derivatives dealing,   said Philippe Khuong-Huu, head of credit derivatives and interest rate   derivatives trading.       
Mr. Khuong-Huu said Morgan developed FPML, which uses XML, or eXtensible  Markup Language, to fill a gap it recognized in the derivatives market,   where outstanding contracts have a notional value of $40 trillion.   
Unlike the foreign exchange and government bond markets, which let  counterparties transact electronically, derivatives trading and settlement   processes "seem to be in the stone age," he said.   
Morgan appears to be following the path it successfully took in making  RiskMetrics an industry standard. Once it had developed risk software   applications using its methodology, the company spun off that division as a   separate software company.     
It now plans to develop software applications for FPML that would enable  derivatives trading over the Web.