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
|
$60M |
| 2 |
Microsoft
MSFT
|
$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$52.5M |
| 4 |
PayPal
PYPL
|
$40.9M |
| 5 |
Netflix
NFLX
|
$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
$48.7M |
| 2 |
Walmart
WMT
|
$45.2M |
| 3 |
Adobe
ADBE
|
$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
$34.2M |
| 5 |
Enphase Energy
ENPH
|
$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
26
Snowflake
SNOW
$76.5B
| $17.4M | 0.01% |
98,730
+21,878
| +28% | +$3.85M |
|
|
B
27
Barrick Mining Corporation
B
$46.3B
| $16.5M | 0.01% |
973,437
+204,065
| +27% | +$3.45M |
|
28
Consumer Discretionary Select Sector SPDR Fund
XLY
$23.2B
| $16.1M | 0.01% |
+94,664
| New | +$16.1M |
|
29
Goldman Sachs
GS
$221B
| $15.7M | 0.01% |
48,591
+48,575
| +303,594% | +$15.7M |
|
30
First Solar
FSLR
$21.6B
| $15.1M | 0.01% |
+79,316
| New | +$15.1M |
|
31
Citigroup
C
$175B
| $15.1M | 0.01% |
327,126
-371,253
| -53% | -$17.1M |
|
32
Johnson & Johnson
JNJ
$429B
| $15M | 0.01% |
+90,729
| New | +$15M |
|
33
CVS Health
CVS
$93B
| $14.9M | 0.01% |
214,884
+71,184
| +50% | +$4.92M |
|
34
D.R. Horton
DHI
$51.3B
| $14.7M | 0.01% |
+121,138
| New | +$14.7M |
|
35
KraneShares CSI China Internet ETF
KWEB
$8.51B
| $14.5M | 0.01% |
537,540
-444,570
| -45% | -$12M |
|
36
Spotify
SPOT
$143B
| $13.1M | 0.01% |
81,447
+69,461
| +580% | +$11.2M |
|
37
iShares Russell 2000 ETF
IWM
$66.6B
| $12.6M | 0.01% |
+67,360
| New | +$12.6M |
|
38
Roku
ROKU
$14.5B
| $12.2M | 0.01% |
191,475
-50,516
| -21% | -$3.23M |
|
|
ATVI
39
DELISTED
Activision Blizzard Inc.
ATVI
| $12.2M | 0.01% |
144,682
+14,531
| +11% | +$1.22M |
|
40
BP
BP
$88.8B
| $11.6M | 0.01% |
+327,723
| New | +$11.6M |
|
41
iShares MSCI Brazil ETF
EWZ
$5.35B
| $11.5M | 0.01% |
+354,381
| New | +$11.5M |
|
42
Berkshire Hathaway Class B
BRK.B
$1.08T
| $11.3M | 0.01% |
+33,093
| New | +$11.3M |
|
43
Energy Select Sector SPDR Fund
XLE
$27.1B
| $11.1M | 0.01% |
136,924
-192,128
| -58% | -$15.6M |
|
44
Nike
NKE
$110B
| $10.8M | 0.01% |
98,058
+2,549
| +3% | +$281K |
|
45
ARK Innovation ETF
ARKK
$7.43B
| $10.4M | 0.01% |
235,047
-20,735
| -8% | -$915K |
|
46
Colgate-Palmolive
CL
$67.7B
| $10.1M | 0.01% |
+131,365
| New | +$10.1M |
|
47
Warner Bros
WBD
$29.5B
| $9.95M | 0.01% |
793,324
+662,104
| +505% | +$8.3M |
|
48
SPDR S&P Biotech ETF
XBI
$5.29B
| $9.72M | 0.01% |
116,879
+37,260
| +47% | +$3.1M |
|
49
Twilio
TWLO
$16.1B
| $9.65M | 0.01% |
151,671
+120,290
| +383% | +$7.65M |
|
50
Baidu
BIDU
$33.1B
| $9.52M | 0.01% |
69,566
+11,285
| +19% | +$1.54M |
|