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
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$170M |
| 2 |
Invesco QQQ Trust
QQQ
|
+$71.3M |
| 3 |
AT&T
T
|
+$44.2M |
| 4 |
Meta Platforms (Facebook)
META
|
+$37.1M |
| 5 |
iShares MSCI Emerging Markets ETF
EEM
|
+$34.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Microsoft
MSFT
|
+$94.3M |
| 2 |
JPMorgan Chase
JPM
|
+$68.2M |
| 3 |
Citigroup
C
|
+$62.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$50.9M |
| 5 |
SPDR Gold Trust
GLD
|
+$46.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Consumer Discretionary | 0.38% |
| 2 | Technology | 0.35% |
| 3 | Communication Services | 0.24% |
| 4 | Healthcare | 0.2% |
| 5 | Consumer Staples | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1151
CALL
Silicon Motion
SIMO
$9.8B
| $5.63M | 0.01% |
86,600
+27,700
| +47% | +$1.7M |
|
|
ESPR
1152
CALL
DELISTED
Esperion Therapeutics
ESPR
| $5.61M | 0.01% |
900,900
+555,700
| +161% | +$3.97M |
|
1153
Halliburton
HAL
$27.3B
| $5.61M | 0.01% |
142,626
-133,901
| -48% | -$4.74M |
|
1154
CALL
Impinj
PI
$3.86B
| $5.6M | 0.01% |
51,300
+35,600
| +227% | +$3.75M |
|
1155
CALL
Ralph Lauren
RL
$22.1B
| $5.59M | 0.01% |
52,900
+35,000
| +196% | +$3.5M |
|
|
VTNR
1156
CALL
DELISTED
Vertex Energy, Inc
VTNR
| $5.58M | 0.01% |
899,200
-102,200
| -10% | -$763K |
|
1157
CALL
Rocket Companies
RKT
$36.2B
| $5.57M | 0.01% |
796,400
+320,500
| +67% | +$2.34M |
|
1158
CALL
Logitech
LOGI
$14.8B
| $5.57M | 0.01% |
89,400
-8,500
| -9% | -$465K |
|
1159
PUT
Archer Daniels Midland
ADM
$41.6B
| $5.55M | 0.01% |
59,800
-86,200
| -59% | -$7.96M |
|
1160
CALL
Tenet Healthcare
THC
$17.1B
| $5.55M | 0.01% |
113,800
+92,400
| +432% | +$4.27M |
|
1161
PUT
PVH
PVH
$3.59B
| $5.55M | 0.01% |
78,600
+36,300
| +86% | +$2.16M |
|
1162
PUT
JB Hunt Transport Services
JBHT
$27.2B
| $5.54M | 0.01% |
31,800
-3,700
| -10% | -$646K |
|
1163
PUT
Aptiv
APTV
$11.9B
| $5.54M | 0.01% |
59,500
+35,000
| +143% | +$3.33M |
|
1164
PUT
Qorvo
QRVO
$7.65B
| $5.54M | 0.01% |
61,100
-16,400
| -21% | -$1.48M |
|
|
HIMX
1165
CALL
Himax Technologies
HIMX
$2.31B
| $5.53M | 0.01% |
890,100
-57,900
| -6% | -$369K |
|
1166
PUT
GitLab
GTLB
$5.1B
| $5.53M | 0.01% |
121,600
+90,800
| +295% | +$4.1M |
|
1167
CALL
Invesco Mortgage Capital
IVR
$782M
| $5.52M | 0.01% |
433,700
-102,900
| -19% | -$1.26M |
|
1168
Canadian Solar
CSIQ
$997M
| $5.51M | 0.01% |
178,199
-26,424
| -13% | -$887K |
|
1169
CALL
Synopsys
SNPS
$71.5B
| $5.49M | 0.01% |
17,200
-4,600
| -21% | -$1.44M |
|
1170
Macy's
M
$6.14B
| $5.48M | 0.01% |
265,227
-69,339
| -21% | -$1.42M |
|
1171
PUT
Ventas
VTR
$47.6B
| $5.47M | 0.01% |
121,400
+66,900
| +123% | +$2.82M |
|
1172
Adobe
ADBE
$84.3B
| $5.45M | 0.01% |
+16,197
| New | +$5.18M |
|
1173
PUT
Crown Holdings
CCK
$12.5B
| $5.45M | 0.01% |
66,300
+8,800
| +15% | +$701K |
|
1174
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$163M
| $5.44M | 0.01% |
24,083
+23,880
| +11,764% | +$6.54M |
|
1175
PUT
NetApp
NTAP
$32.3B
| $5.43M | 0.01% |
90,400
-100
| -0.1% | -$6.63K |
|
Similar funds
Simplex Trading's Q4 2022 Portfolio in Review
As of Q4 2022, Simplex Trading held 11,206 positions worth $91.9B, up 3.9% from $88.5B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
Simplex Trading's Q4 2022 filing shows 1,219 new, 3,365 increased, 4,370 reduced and 1,942 closed positions. Its largest new stake was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M. The largest sale was Microsoft, an estimated $94.3M.
By sector, the portfolio is most concentrated in Consumer Discretionary at 0.38% of assets, up from 0.3% a quarter earlier, followed by Technology and Communication Services.
- Simplex Trading's largest Q4 2022 buy was iShares MSCI Emerging Markets ETF: 932,756 shares worth $35.4M.
- Simplex Trading added most to Amazon in Q4 2022, an estimated $170M increase.
- Simplex Trading's biggest Q4 2022 reduction was Microsoft, cutting an estimated $94.3M.
- Simplex Trading fully exited JPMorgan Chase in Q4 2022, selling an estimated $68.2M.
- Simplex Trading's ten largest holdings make up 34% of its $91.9B portfolio in Q4 2022.
- Simplex Trading opened 1,219 new positions and closed 1,942 in Q4 2022.
- Simplex Trading's portfolio value rose 3.9% quarter-over-quarter to $91.9B.
Based on Simplex Trading's 13F filing for Q4 2022, filed 2 Feb 2023.