Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
NVIDIA
NVDA
|
$216M |
| 2 |
Apple
AAPL
|
$159M |
| 3 |
Broadcom
AVGO
|
$128M |
| 4 |
Booking.com
BKNG
|
$62.2M |
| 5 |
SPDR S&P 500 ETF Trust
SPY
|
$61.9M |
Top Sells
| 1 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$141M |
| 2 |
Amazon
AMZN
|
$53.1M |
| 3 |
TSMC
TSM
|
$45.7M |
| 4 |
Netflix
NFLX
|
$45.3M |
| 5 |
Pfizer
PFE
|
$38.3M |
Sector Composition
| 1 | Technology | 34.74% |
| 2 | Communication Services | 9% |
| 3 | Consumer Discretionary | 8.67% |
| 4 | Healthcare | 8.07% |
| 5 | Financials | 6.4% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
76
Workday
WDAY
$62.3B
| $7.53M | ﹤0.01% |
+31,359
| New | +$7.53M |
|
77
Cloudflare
NET
$71.7B
| $7.49M | ﹤0.01% |
+38,235
| New | +$7.49M |
|
78
Vertiv
VRT
$48B
| $7.2M | ﹤0.01% |
+56,103
| New | +$7.2M |
|
79
ARK 21Shares Bitcoin ETF
ARKB
$1.79B
| $7.19M | ﹤0.01% |
200,964
+140,124
| +230% | +$660K |
|
|
BPMC
80
DELISTED
Blueprint Medicines
BPMC
| $7.18M | ﹤0.01% |
55,989
+51,285
| +1,090% | +$6.57M |
|
81
AstraZeneca
AZN
$255B
| $7.08M | ﹤0.01% |
+101,293
| New | +$7.08M |
|
82
lululemon athletica
LULU
$23.8B
| $7.08M | ﹤0.01% |
+29,788
| New | +$7.08M |
|
83
Invesco S&P 500 Equal Weight ETF
RSP
$73.5B
| $7.07M | ﹤0.01% |
+38,899
| New | +$7.07M |
|
84
Coca-Cola
KO
$297B
| $7.06M | ﹤0.01% |
+99,795
| New | +$7.06M |
|
85
Charter Communications
CHTR
$35.7B
| $7M | ﹤0.01% |
17,111
+10,820
| +172% | +$4.42M |
|
86
Snap
SNAP
$12.3B
| $6.8M | ﹤0.01% |
782,837
-351,596
| -31% | -$3.05M |
|
87
Johnson & Johnson
JNJ
$429B
| $6.79M | ﹤0.01% |
+44,482
| New | +$6.79M |
|
88
ON Semiconductor
ON
$19.5B
| $6.63M | ﹤0.01% |
126,513
+116,965
| +1,225% | +$6.13M |
|
89
Bilibili
BILI
$9.2B
| $6.59M | ﹤0.01% |
307,199
+259,106
| +539% | +$5.56M |
|
90
Fidelity Wise Origin Bitcoin Fund
FBTC
$14.8B
| $6.56M | ﹤0.01% |
69,771
-49,274
| -41% | -$4.63M |
|
91
Direxion Daily 20+ Year Treasury Bull 3X Shares
TMF
$4.95B
| $6.55M | ﹤0.01% |
+166,816
| New | +$6.55M |
|
92
Mondelez International
MDLZ
$79.3B
| $6.31M | ﹤0.01% |
+93,519
| New | +$6.31M |
|
93
TKO Group
TKO
$15.3B
| $6.2M | ﹤0.01% |
+34,096
| New | +$6.2M |
|
94
Dollar General
DG
$24.1B
| $6.04M | ﹤0.01% |
52,823
-29,472
| -36% | -$3.37M |
|
95
Core Scientific
CORZ
$4.15B
| $5.92M | ﹤0.01% |
346,801
+195,850
| +130% | +$3.34M |
|
96
Air Lease Corp
AL
$7.13B
| $5.91M | ﹤0.01% |
101,068
+96,548
| +2,136% | +$5.65M |
|
97
iShares National Muni Bond ETF
MUB
$38.6B
| $5.9M | ﹤0.01% |
56,446
-21,501
| -28% | -$2.25M |
|
98
AES
AES
$9.42B
| $5.9M | ﹤0.01% |
560,576
+268,614
| +92% | +$2.83M |
|
99
Warner Bros
WBD
$29.5B
| $5.87M | ﹤0.01% |
511,945
-574,859
| -53% | -$6.59M |
|
100
Advance Auto Parts
AAP
$3.54B
| $5.8M | ﹤0.01% |
124,762
+25,611
| +26% | +$1.19M |
|