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 | |
|---|---|---|---|---|---|---|
1551
CALL
Toyota
TM
$210B
| $2.76M | ﹤0.01% |
13,400
-10,800
| -45% | -$2.44M |
|
1552
CALL
Targa Resources
TRGP
$60.4B
| $2.76M | ﹤0.01% |
11,000
+8,400
| +323% | +$1.82M |
|
1553
ZIM Integrated Shipping Services
ZIM
$3B
| $2.76M | ﹤0.01% |
+104,650
| New | +$2.61M |
|
1554
CALL
Sweetgreen
SG
$713M
| $2.75M | ﹤0.01% |
530,600
-219,100
| -29% | -$1.33M |
|
1555
CALL
Huntington Bancshares
HBAN
$35.1B
| $2.75M | ﹤0.01% |
175,900
-10,800
| -6% | -$184K |
|
1556
PUT
Enbridge
ENB
$124B
| $2.75M | ﹤0.01% |
50,800
-65,800
| -56% | -$3.35M |
|
1557
PUT
Dominion Energy
D
$62.5B
| $2.74M | ﹤0.01% |
44,400
-20,800
| -32% | -$1.28M |
|
1558
PUT
Cenovus Energy
CVE
$54.6B
| $2.74M | ﹤0.01% |
103,400
-114,800
| -53% | -$2.45M |
|
1559
CALL
Genmab
GMAB
$17.7B
| $2.74M | ﹤0.01% |
102,200
+88,700
| +657% | +$2.66M |
|
|
VISN
1560
CALL
Vistance Networks Inc
VISN
$2.66B
| $2.74M | ﹤0.01% |
150,500
-113,400
| -43% | -$2.07M |
|
|
RGTX
1561
CALL
Defiance Daily Target 2X Long RGTI ETF
RGTX
$47.3M
| $2.72M | ﹤0.01% |
+127,500
| New | +$4.15M |
|
1562
PUT
Arbor Realty Trust
ABR
$960M
| $2.72M | ﹤0.01% |
352,700
-45,400
| -11% | -$354K |
|
1563
CALL
Viking Holdings
VIK
$44.9B
| $2.72M | ﹤0.01% |
37,000
+18,800
| +103% | +$1.37M |
|
|
CRCL
1564
Circle Internet Group
CRCL
$15.5B
| $2.72M | ﹤0.01% |
28,464
-85,730
| -75% | -$7.27M |
|
1565
Ecopetrol
EC
$32.9B
| $2.71M | ﹤0.01% |
+180,791
| New | +$2.29M |
|
1566
Old Dominion Freight Line
ODFL
$48.5B
| $2.7M | ﹤0.01% |
+13,838
| New | +$2.58M |
|
1567
PUT
Digital Realty Trust
DLR
$73.7B
| $2.7M | ﹤0.01% |
15,000
-17,400
| -54% | -$2.97M |
|
1568
Invesco Senior Loan ETF
BKLN
$7.1B
| $2.7M | ﹤0.01% |
+132,284
| New | +$2.73M |
|
1569
CALL
ProShares Ether Strategy ETF
EETH
$54.2M
| $2.7M | ﹤0.01% |
106,800
-107,400
| -50% | -$3.2M |
|
1570
Synopsys
SNPS
$71.5B
| $2.7M | ﹤0.01% |
6,799
-8,117
| -54% | -$3.67M |
|
1571
Matador Resources
MTDR
$6.31B
| $2.69M | ﹤0.01% |
+42,624
| New | +$2.13M |
|
1572
PUT
Ross Stores
ROST
$76.6B
| $2.69M | ﹤0.01% |
12,400
-21,300
| -63% | -$4.24M |
|
1573
Altria Group
MO
$122B
| $2.68M | ﹤0.01% |
+40,668
| New | +$2.62M |
|
1574
PUT
McKesson
MCK
$98.5B
| $2.68M | ﹤0.01% |
3,100
-11,200
| -78% | -$10M |
|
1575
CALL
BridgeBio Pharma
BBIO
$16.5B
| $2.68M | ﹤0.01% |
36,100
-89,600
| -71% | -$6.49M |
|
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.