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Portfolio (Quarterly) Guide ↗

PRIMECAP MANAGEMENT CO/CA/

· CIK 0000763212
13F Portfolio $127.0B AUM 320 positions Filed May 11, 2026 EDGAR ↗ ← All Funds
Q1 2026 Q4 2025 · All 9 New 66 Added 125 Reduced 8 Exited
Page 16 of 16  ·  320 positions
# Ticker Company Sector Shares Value ↓ % Port Chg Shares Chg % Period Price ① Since Period ①
301 ANET ARISTA NETWORKS INC Technology 16,000.0 $2.0M 0.00% $122.78 +42.2%
302 ULCC FRONTIER GROUP HLDGS INC Industrials 494,900.0 $1.7M 0.00% $3.53 +102.3%
303 ITT ITT INC Industrials 9,000.0 $1.7M 0.00% NEW $190.53 +4.6%
304 CERS CERUS CORP Healthcare 789,300.0 $1.4M 0.00% -5K -0.7% $1.82 +42.9%
305 CBOE CBOE GLOBAL MKTS INC Financial Services 5,100.0 $1.4M 0.00% -800.0 -13.6% $281.07 -8.9%
306 GREIF INC 15,000.0 $1.3M 0.00% $87.54
307 CMCSA COMCAST CORP NEW Communication Services 44,800.0 $1.3M 0.00% $28.71 -22.3%
308 IBOTTA INC 41,935.0 $1.3M 0.00% -46K -52.1% $29.97
309 AMBA AMBARELLA INC Technology 19,400.0 $999K 0.00% -100.0 -0.5% $51.48 +37.4%
310 MQ MARQETA INC Technology 163,600.0 $667K 0.00% -370K -69.3% $4.08 -7.8%
311 ONESTREAM INC 19,500.0 $468K -100.0 -0.5% $24.00
312 WMG WARNER MUSIC GROUP CORP Communication Services 17,300.0 $442K NEW $25.54 +10.3%
313 HCAT HEALTH CATALYST INC Healthcare 340,418.0 $432K $1.27 +35.4%
314 GRWG GROWGENERATION CORP Consumer Cyclical 377,300.0 $415K $1.10 +33.6%
315 NFE NEW FORTRESS ENERGY INC Utilities 540,300.0 $319K -1.5M -73.8% $0.59 -32.1%
316 VLRS CONTROLADORA VUELA COMP DE A Industrials 41,000.0 $297K $7.24 +23.9%
317 SANDISK CORP 400.0 $254K NEW $635.34
318 MDT MEDTRONIC PLC Healthcare 2,440.0 $211K $86.65 -8.5%
319 LAB STANDARD BIOTOOLS INC Healthcare 153,374.0 $141K $0.92 -15.8%
320 SNAP SNAP INC Communication Services 18,550.0 $85K $4.60 +0.7%
Page 16 of 16  ·  320 positions

Period Price is the implied market price on the last day of the reporting period, calculated as reported value ÷ shares held. It is not the fund's purchase price or cost basis — the fund may have initiated or added to the position at any point during the quarter at a different price. Since Period shows the price change from that quarter-end snapshot to today's last price — it reflects stock movement after the report date, not the fund's actual return.

Sector Allocation
Technology 31.7%
Healthcare 24.9%
Industrials 12.1%
Consumer Cyclical 10.8%
Financial Services 8.6%
Communication Services 7.3%
Energy 2.0%
Consumer Defensive 1.4%
Basic Materials 1.1%
Real Estate 0.1%