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 | |
|---|---|---|---|---|---|---|
1401
Nu Holdings
NU
$68.1B
| $3.37M | ﹤0.01% |
234,510
-623,775
| -73% | -$10.1M |
|
1402
CALL
Synchrony
SYF
$23.7B
| $3.36M | ﹤0.01% |
49,400
-79,100
| -62% | -$5.75M |
|
1403
Intuit
INTU
$81.1B
| $3.36M | ﹤0.01% |
+7,768
| New | +$3.71M |
|
1404
CALL
Ormat Technologies
ORA
$6.11B
| $3.35M | ﹤0.01% |
29,900
+13,800
| +86% | +$1.6M |
|
1405
PUT
Centene
CNC
$31.3B
| $3.35M | ﹤0.01% |
102,200
-195,600
| -66% | -$8.02M |
|
|
ARR
1406
PUT
Armour Residential REIT
ARR
$2.02B
| $3.34M | ﹤0.01% |
200,100
-195,200
| -49% | -$3.45M |
|
1407
PUT
Paychex
PAYX
$40.4B
| $3.33M | ﹤0.01% |
36,200
-3,600
| -9% | -$356K |
|
1408
PUT
Cadence Design Systems
CDNS
$90B
| $3.33M | ﹤0.01% |
12,000
-14,300
| -54% | -$4.27M |
|
1409
PUT
ArcelorMittal
MT
$50.4B
| $3.33M | ﹤0.01% |
64,100
-38,800
| -38% | -$2.15M |
|
|
TIGR
1410
CALL
UP Fintech Holding
TIGR
$845M
| $3.33M | ﹤0.01% |
528,500
-423,300
| -44% | -$3.45M |
|
1411
CALL
Carrier Global
CARR
$57.2B
| $3.33M | ﹤0.01% |
59,100
-37,500
| -39% | -$2.22M |
|
1412
PUT
Lincoln National
LNC
$7.91B
| $3.33M | ﹤0.01% |
93,700
+4,100
| +5% | +$158K |
|
1413
Chipotle Mexican Grill
CMG
$40.8B
| $3.33M | ﹤0.01% |
103,892
-113,779
| -52% | -$4.21M |
|
1414
PUT
Twilio
TWLO
$29.1B
| $3.32M | ﹤0.01% |
26,400
-81,300
| -75% | -$10M |
|
1415
CALL
FuboTV Inc
FUBO
$245M
| $3.32M | ﹤0.01% |
350,600
+176,117
| +101% | +$3.49M |
|
|
PPL
1416
PUT
PPL Corp
PPL
$27.3B
| $3.32M | ﹤0.01% |
86,800
+20,600
| +31% | +$760K |
|
1417
PUT
Centrus Energy
LEU
$3.22B
| $3.32M | ﹤0.01% |
19,100
-22,700
| -54% | -$5.47M |
|
1418
PUT
Unum
UNM
$13.8B
| $3.32M | ﹤0.01% |
45,400
+24,800
| +120% | +$1.85M |
|
1419
Snowflake
SNOW
$92.9B
| $3.31M | ﹤0.01% |
21,971
-40,038
| -65% | -$7.41M |
|
1420
CALL
Capricor Therapeutics
CAPR
$1.14B
| $3.31M | ﹤0.01% |
109,000
+37,300
| +52% | +$994K |
|
1421
CALL
Tidewater
TDW
$3.91B
| $3.31M | ﹤0.01% |
39,600
-9,800
| -20% | -$682K |
|
1422
CALL
Kratos Defense & Security Solutions
KTOS
$8.88B
| $3.3M | ﹤0.01% |
+46,800
| New | +$4.49M |
|
1423
CALL
Kimberly-Clark
KMB
$36.4B
| $3.3M | ﹤0.01% |
34,200
-221,100
| -87% | -$22.6M |
|
1424
PUT
Quanta Services
PWR
$93.9B
| $3.29M | ﹤0.01% |
6,000
-13,100
| -69% | -$6.75M |
|
1425
PUT
Invesco DB US Dollar Index Bullish Fund
UUP
$434M
| $3.29M | ﹤0.01% |
118,600
+111,300
| +1,525% | +$3.03M |
|
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.