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 | |
|---|---|---|---|---|---|---|
2026
CALL
Performance Food Group
PFGC
$17.9B
| $1.58M | ﹤0.01% |
18,500
+7,900
| +75% | +$722K |
|
|
AWTM
2027
CALL
DELISTED
AWTM Ultra-Short Duration Enhanced Income ETF
AWTM
| $1.58M | ﹤0.01% |
65,900
+37,600
| +133% | +$903K |
|
2028
New York Times
NYT
$11.9B
| $1.58M | ﹤0.01% |
+18,884
| New | +$1.43M |
|
2029
PUT
Scotiabank
BNS
$106B
| $1.58M | ﹤0.01% |
22,800
+9,200
| +68% | +$675K |
|
2030
PUT
Immunovant
IMVT
$8.25B
| $1.58M | ﹤0.01% |
63,600
+53,500
| +530% | +$1.39M |
|
2031
Nextpower Inc
NXT
$15.2B
| $1.58M | ﹤0.01% |
+13,101
| New | +$1.45M |
|
2032
Global X Silver Miners ETF NEW
SIL
$4.08B
| $1.58M | ﹤0.01% |
17,524
-53,526
| -75% | -$5.27M |
|
2033
PUT
Omega Healthcare
OHI
$15.3B
| $1.58M | ﹤0.01% |
36,000
+12,100
| +51% | +$552K |
|
2034
PUT
Cboe Global Markets
CBOE
$29.7B
| $1.57M | ﹤0.01% |
5,600
-11,700
| -68% | -$3.26M |
|
2035
PUT
Intercontinental Exchange
ICE
$83.5B
| $1.57M | ﹤0.01% |
+10,000
| New | +$1.63M |
|
2036
CALL
Pitney Bowes
PBI
$2.47B
| $1.57M | ﹤0.01% |
142,300
-63,200
| -31% | -$663K |
|
2037
HF Sinclair
DINO
$16.1B
| $1.57M | ﹤0.01% |
25,187
+3,456
| +16% | +$187K |
|
2038
PUT
Planet Fitness
PLNT
$4.28B
| $1.57M | ﹤0.01% |
21,100
-40,600
| -66% | -$3.57M |
|
2039
PUT
Equity Residential
EQR
$25.4B
| $1.57M | ﹤0.01% |
26,500
+18,600
| +235% | +$1.15M |
|
2040
PUT
Steel Dynamics
STLD
$35.7B
| $1.57M | ﹤0.01% |
8,700
-23,100
| -73% | -$4.21M |
|
|
2041
Western Digital
WDC
$170B
| $1.56M | ﹤0.01% |
5,785
-335,977
| -98% | -$87.7M |
|
2042
CALL
Atour Lifestyle Holdings
ATAT
$4.53B
| $1.56M | ﹤0.01% |
42,500
-3,200
| -7% | -$121K |
|
|
PRMB
2043
CALL
Primo Brands
PRMB
$8.32B
| $1.56M | ﹤0.01% |
83,000
+69,400
| +510% | +$1.34M |
|
2044
PUT
Critical Metals Corp
CRML
$870M
| $1.56M | ﹤0.01% |
196,800
+8,800
| +5% | +$101K |
|
2045
PUT
Waste Management
WM
$96.2B
| $1.56M | ﹤0.01% |
6,800
-26,700
| -80% | -$6.13M |
|
2046
CALL
Roivant Sciences
ROIV
$25.1B
| $1.56M | ﹤0.01% |
56,400
-62,800
| -53% | -$1.61M |
|
2047
CALL
Align Technology
ALGN
$12.1B
| $1.56M | ﹤0.01% |
9,100
-14,200
| -61% | -$2.49M |
|
2048
CALL
abrdn Bloomberg All Commodity Longer Dated Strategy K-1 Free ETF
BCD
$402M
| $1.56M | ﹤0.01% |
+64,200
| New | +$2.18M |
|
|
KLAR
2049
CALL
Klarna Group
KLAR
$6.81B
| $1.56M | ﹤0.01% |
119,000
+81,900
| +221% | +$1.62M |
|
2050
PUT
Sempra
SRE
$60.2B
| $1.55M | ﹤0.01% |
16,000
-54,900
| -77% | -$5.02M |
|
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.