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 | |
|---|---|---|---|---|---|---|
1226
PUT
Prudential Financial
PRU
$41.7B
| $4.2M | ﹤0.01% |
43,000
-11,900
| -22% | -$1.23M |
|
1227
CALL
Avis
CAR
$5.63B
| $4.2M | ﹤0.01% |
28,800
-162,800
| -85% | -$18.6M |
|
|
ETOR
1228
CALL
eToro Group
ETOR
$2.93B
| $4.19M | ﹤0.01% |
139,600
+50,600
| +57% | +$1.55M |
|
1229
CALL
Moody's
MCO
$81.7B
| $4.19M | ﹤0.01% |
9,600
+9,100
| +1,820% | +$4.3M |
|
1230
CALL
Wendy's
WEN
$1.33B
| $4.18M | ﹤0.01% |
601,300
+384,900
| +178% | +$2.96M |
|
1231
Fidelity Wise Origin Bitcoin Fund
FBTC
$11.9B
| $4.17M | ﹤0.01% |
+70,689
| New | +$4.7M |
|
1232
PUT
Trip.com Group
TCOM
$27.5B
| $4.17M | ﹤0.01% |
83,800
+27,100
| +48% | +$1.58M |
|
1233
CALL
Nextpower Inc
NXT
$15.2B
| $4.17M | ﹤0.01% |
34,600
-194,600
| -85% | -$21.6M |
|
1234
PUT
JetBlue
JBLU
$1.96B
| $4.16M | ﹤0.01% |
940,400
-1,313,700
| -58% | -$6.67M |
|
1235
PUT
OppFi
OPFI
$770M
| $4.15M | ﹤0.01% |
538,300
+99,300
| +23% | +$909K |
|
1236
CALL
Abercrombie & Fitch
ANF
$4.17B
| $4.15M | ﹤0.01% |
45,400
-9,400
| -17% | -$914K |
|
1237
CALL
TG Therapeutics
TGTX
$8.58B
| $4.14M | ﹤0.01% |
124,600
+40,100
| +47% | +$1.2M |
|
1238
CALL
Peloton Interactive
PTON
$2.63B
| $4.14M | ﹤0.01% |
963,900
+17,000
| +2% | +$82.9K |
|
1239
PUT
Lennar Class A
LEN
$20.4B
| $4.13M | ﹤0.01% |
47,600
-44,700
| -48% | -$4.83M |
|
1240
CALL
ArcelorMittal
MT
$50.4B
| $4.13M | ﹤0.01% |
79,400
-16,200
| -17% | -$898K |
|
1241
CALL
United States Antimony
UAMY
$766M
| $4.12M | ﹤0.01% |
472,100
-510,500
| -52% | -$4.45M |
|
1242
PUT
Marriott International
MAR
$98.7B
| $4.12M | ﹤0.01% |
12,600
-2,600
| -17% | -$855K |
|
1243
PUT
Fabrinet
FN
$17.1B
| $4.12M | ﹤0.01% |
7,900
+7,700
| +3,850% | +$3.91M |
|
1244
PUT
HCA Healthcare
HCA
$84.8B
| $4.12M | ﹤0.01% |
8,700
-30,600
| -78% | -$15.4M |
|
1245
Vale
VALE
$62.9B
| $4.09M | ﹤0.01% |
257,145
-379,364
| -60% | -$5.92M |
|
|
FLY
1246
CALL
Firefly Aerospace
FLY
$3.23B
| $4.09M | ﹤0.01% |
143,700
+60,000
| +72% | +$1.46M |
|
1247
Erasca
ERAS
$6.63B
| $4.09M | ﹤0.01% |
252,747
-93,325
| -27% | -$1.1M |
|
1248
CALL
Automatic Data Processing
ADP
$100B
| $4.08M | ﹤0.01% |
+20,100
| New | +$4.61M |
|
1249
PUT
Verisk Analytics
VRSK
$26.4B
| $4.08M | ﹤0.01% |
21,500
+19,200
| +835% | +$3.9M |
|
1250
PUT
AES
AES
$10.6B
| $4.07M | ﹤0.01% |
288,700
-137,200
| -32% | -$2.04M |
|
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.