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
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1201
Mercado Libre
MELI
$91.3B
| $4.32M | ﹤0.01% |
2,497
-3,998
| -62% | -$7.71M |
|
1202
CALL
Conagra Brands
CAG
$7.07B
| $4.32M | ﹤0.01% |
274,500
-39,200
| -12% | -$692K |
|
1203
CALL
TE Connectivity
TEL
$58.8B
| $4.31M | ﹤0.01% |
20,600
-31,100
| -60% | -$6.86M |
|
1204
CALL
PBF Energy
PBF
$7.29B
| $4.3M | ﹤0.01% |
90,400
+79,400
| +722% | +$2.97M |
|
1205
Kinross Gold
KGC
$28.5B
| $4.3M | ﹤0.01% |
140,809
+61,607
| +78% | +$2.02M |
|
1206
CALL
MetLife
MET
$61B
| $4.29M | ﹤0.01% |
60,600
-81,400
| -57% | -$6.09M |
|
|
FETH
1207
CALL
Fidelity Ethereum Fund
FETH
$1B
| $4.28M | ﹤0.01% |
204,900
+155,500
| +315% | +$3.71M |
|
1208
CALL
Denison Mines
DNN
$2.63B
| $4.28M | ﹤0.01% |
1,211,800
-868,900
| -42% | -$3.27M |
|
1209
CALL
Factset
FDS
$9.05B
| $4.27M | ﹤0.01% |
19,700
+3,800
| +24% | +$887K |
|
1210
CALL
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $4.27M | ﹤0.01% |
188,800
-289,600
| -61% | -$7.89M |
|
1211
Global X Cybersecurity ETF
BUG
$1.2B
| $4.27M | ﹤0.01% |
170,082
+169,287
| +21,294% | +$4.65M |
|
1212
CALL
GE HealthCare
GEHC
$27.6B
| $4.26M | ﹤0.01% |
+59,900
| New | +$4.72M |
|
1213
PUT
Deutsche Bank
DB
$66.3B
| $4.26M | ﹤0.01% |
142,900
-24,700
| -15% | -$870K |
|
1214
PUT
Peloton Interactive
PTON
$2.63B
| $4.25M | ﹤0.01% |
991,500
-86,300
| -8% | -$421K |
|
1215
PUT
ATI
ATI
$27B
| $4.25M | ﹤0.01% |
29,200
-37,300
| -56% | -$5.19M |
|
1216
United Parcel Service
UPS
$97.6B
| $4.24M | ﹤0.01% |
43,120
-75,788
| -64% | -$8.13M |
|
1217
CALL
Scotiabank
BNS
$106B
| $4.24M | ﹤0.01% |
61,200
+49,900
| +442% | +$3.66M |
|
1218
CALL
Amkor Technology
AMKR
$16.1B
| $4.24M | ﹤0.01% |
94,100
-141,800
| -60% | -$6.79M |
|
1219
CALL
West Pharmaceutical
WST
$23.1B
| $4.24M | ﹤0.01% |
+16,900
| New | +$4.2M |
|
1220
First Horizon
FHN
$12.1B
| $4.23M | ﹤0.01% |
185,831
+45,087
| +32% | +$1.08M |
|
1221
CALL
Xylem
XYL
$28.5B
| $4.22M | ﹤0.01% |
35,300
+29,200
| +479% | +$3.83M |
|
1222
PUT
CarMax
KMX
$8.27B
| $4.22M | ﹤0.01% |
101,400
+18,800
| +23% | +$823K |
|
1223
PUT
Kohl's
KSS
$2.03B
| $4.21M | ﹤0.01% |
326,500
-182,400
| -36% | -$3.08M |
|
|
DOCU
1224
CALL
DocuSign
DOCU
$9.63B
| $4.21M | ﹤0.01% |
88,800
+4,300
| +5% | +$220K |
|
|
TYNS
1225
CALL
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $4.21M | ﹤0.01% |
36,200
-26,400
| -42% | -$3.07M |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.