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 |
Amazon
AMZN
|
+$102M |
| 2 |
TSMC
TSM
|
+$29.6M |
| 3 |
JPMorgan Chase
JPM
|
+$21.9M |
| 4 |
Boeing
BA
|
+$18.8M |
| 5 |
Target
TGT
|
+$13.5M |
Top Sells
| 1 |
SPDR Gold Trust
GLD
|
+$94.2M |
| 2 |
Tesla
TSLA
|
+$91.2M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$81.5M |
| 4 |
NVIDIA
NVDA
|
+$60M |
| 5 |
iShares MSCI EAFE ETF
EFA
|
+$40.5M |
Sector Composition
| 1 | Consumer Discretionary | 21.73% |
| 2 | Technology | 16.48% |
| 3 | Healthcare | 9.06% |
| 4 | Financials | 8.3% |
| 5 | Communication Services | 7.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
Sonos
SONO
$1.78B
| $1.13M | ﹤0.01% |
74,204
-55,353
| -43% | -$840K |
|
302
AXIS Capital
AXS
$7.67B
| $1.12M | ﹤0.01% |
25,362
+17,011
| +204% | +$749K |
|
303
BJs Wholesale Club
BJ
$13B
| $1.1M | ﹤0.01% |
+26,507
| New | +$1.1M |
|
304
Rockwell Automation
ROK
$38.8B
| $1.1M | ﹤0.01% |
4,987
+4,927
| +8,212% | +$1.09M |
|
305
MillerKnoll
MLKN
$1.44B
| $1.1M | ﹤0.01% |
+36,411
| New | +$1.1M |
|
306
Agnico Eagle Mines
AEM
$77.5B
| $1.09M | ﹤0.01% |
13,694
-26,871
| -66% | -$2.14M |
|
307
BILL Holdings
BILL
$5.1B
| $1.08M | ﹤0.01% |
10,816
-12,405
| -53% | -$1.24M |
|
|
LGF.A
308
DELISTED
Lions Gate Entertainment Corp. Class A Voting Shares
LGF.A
| $1.08M | ﹤0.01% |
113,478
+23,370
| +26% | +$221K |
|
309
Ross Stores
ROST
$49.6B
| $1.07M | ﹤0.01% |
11,514
-36,355
| -76% | -$3.39M |
|
310
Campbell Soup
CPB
$10.1B
| $1.07M | ﹤0.01% |
+22,097
| New | +$1.07M |
|
|
BZUN
311
Baozun
BZUN
$227M
| $1.05M | ﹤0.01% |
+32,402
| New | +$1.05M |
|
|
HES
312
DELISTED
Hess
HES
| $1.05M | ﹤0.01% |
+25,703
| New | +$1.05M |
|
|
313
NVIDIA
NVDA
$4.1T
| $1.05M | ﹤0.01% |
77,400
-4,437,720
| -98% | -$60M |
|
314
Direxion Daily Junior Gold Miners Index Bull 2X Shares
JNUG
$495M
| $1.05M | ﹤0.01% |
8,112
-17,350
| -68% | -$2.24M |
|
315
Seres Therapeutics
MCRB
$200M
| $1.04M | ﹤0.01% |
+1,841
| New | +$1.04M |
|
|
BHVN
316
DELISTED
Biohaven Pharmaceutical Holding Company Ltd.
BHVN
| $1.04M | ﹤0.01% |
+15,992
| New | +$1.04M |
|
317
Popular Inc
BPOP
$8.48B
| $1.04M | ﹤0.01% |
28,536
+27,890
| +4,317% | +$1.01M |
|
318
Louisiana-Pacific
LPX
$6.91B
| $1.04M | ﹤0.01% |
35,079
+19,368
| +123% | +$571K |
|
319
abrdn Physical Gold Shares ETF
SGOL
$5.79B
| $1.03M | ﹤0.01% |
56,885
+36,888
| +184% | +$669K |
|
320
Materials Select Sector SPDR Fund
XLB
$5.52B
| $1.03M | ﹤0.01% |
16,141
-69,455
| -81% | -$4.42M |
|
|
AMRN
321
Amarin Corp
AMRN
$306M
| $1.02M | ﹤0.01% |
12,128
+1,644
| +16% | +$138K |
|
322
Diamondback Energy
FANG
$39.7B
| $1.02M | ﹤0.01% |
33,758
+23,603
| +232% | +$710K |
|
323
Cintas
CTAS
$81.7B
| $1.01M | ﹤0.01% |
12,112
-13,492
| -53% | -$1.12M |
|
324
ProShares Ultra Silver
AGQ
$913M
| $1M | ﹤0.01% |
24,026
-4,395
| -15% | -$183K |
|
325
HubSpot
HUBS
$26.3B
| $1M | ﹤0.01% |
3,427
+1,915
| +127% | +$559K |
|