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 | |
|---|---|---|---|---|---|---|
276
FMC
FMC
$4.72B
| $1.72M | ﹤0.01% |
41,127
+12,921
| +46% | +$539K |
|
|
277
Netflix
NFLX
$529B
| $1.7M | ﹤0.01% |
1,273
-33,871
| -96% | -$45.3M |
|
278
iShares 7-10 Year Treasury Bond ETF
IEF
$35.9B
| $1.68M | ﹤0.01% |
+17,500
| New | +$1.68M |
|
279
Eastman Chemical
EMN
$7.93B
| $1.65M | ﹤0.01% |
22,108
-43,770
| -66% | -$3.27M |
|
280
Polaris
PII
$3.33B
| $1.65M | ﹤0.01% |
+40,574
| New | +$1.65M |
|
281
Domo
DOMO
$588M
| $1.64M | ﹤0.01% |
+117,638
| New | +$1.64M |
|
282
Range Resources
RRC
$8.27B
| $1.63M | ﹤0.01% |
40,003
-81,612
| -67% | -$3.32M |
|
283
Burford Capital
BUR
$2.92B
| $1.62M | ﹤0.01% |
113,807
+83,746
| +279% | +$1.19M |
|
284
Schneider National
SNDR
$4.3B
| $1.61M | ﹤0.01% |
66,491
+46,939
| +240% | +$1.13M |
|
|
ROBN
285
T-Rex 2X Long HOOD Daily Target ETF
ROBN
$192M
| $1.59M | ﹤0.01% |
30,331
+15,548
| +105% | +$813K |
|
286
Brown & Brown
BRO
$31.3B
| $1.58M | ﹤0.01% |
14,209
+13,876
| +4,167% | +$1.54M |
|
287
ZIM Integrated Shipping Services
ZIM
$1.62B
| $1.58M | ﹤0.01% |
97,939
-248,841
| -72% | -$4M |
|
288
Bumble
BMBL
$697M
| $1.57M | ﹤0.01% |
238,846
+41,268
| +21% | +$272K |
|
289
NetEase
NTES
$85B
| $1.57M | ﹤0.01% |
+11,685
| New | +$1.57M |
|
290
ODDITY Tech
ODD
$3.52B
| $1.57M | ﹤0.01% |
20,790
-23,268
| -53% | -$1.76M |
|
291
Ionis Pharmaceuticals
IONS
$9.76B
| $1.57M | ﹤0.01% |
39,638
-24,943
| -39% | -$985K |
|
292
Alliance Resource Partners
ARLP
$2.94B
| $1.56M | ﹤0.01% |
59,724
+8,392
| +16% | +$219K |
|
293
Align Technology
ALGN
$10.1B
| $1.54M | ﹤0.01% |
8,147
-203
| -2% | -$38.4K |
|
294
Aurora
AUR
$10.6B
| $1.53M | ﹤0.01% |
292,871
+279,083
| +2,024% | +$1.46M |
|
|
ETOR
295
eToro Group Ltd. Class A Common Shares
ETOR
$3.88B
| $1.53M | ﹤0.01% |
+23,024
| New | +$1.53M |
|
296
Global X Defense Tech ETF
SHLD
$3.46B
| $1.52M | ﹤0.01% |
+25,233
| New | +$1.52M |
|
297
JetBlue
JBLU
$1.85B
| $1.51M | ﹤0.01% |
357,012
+236,065
| +195% | +$998K |
|
298
Middleby
MIDD
$7.32B
| $1.51M | ﹤0.01% |
10,452
+4,807
| +85% | +$692K |
|
299
Liquidia Corp
LQDA
$2.48B
| $1.5M | ﹤0.01% |
120,309
+41,282
| +52% | +$514K |
|
300
UGI
UGI
$7.43B
| $1.5M | ﹤0.01% |
41,114
-4,928
| -11% | -$179K |
|