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 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
776
PUT
Equinix
EQIX
$102B
| $11.3M | 0.01% |
15,200
+9,400
| +162% | +$6.76M |
|
777
PUT
NetEase
NTES
$76.8B
| $11.3M | 0.01% |
125,500
-104,900
| -46% | -$9.99M |
|
778
Starbucks
SBUX
$118B
| $11.2M | 0.01% |
122,764
+5,226
| +4% | +$493K |
|
779
iShares Core S&P 500 ETF
IVV
$874B
| $11.2M | 0.01% |
24,597
+17,869
| +266% | +$7.99M |
|
780
CALL
DexCom
DXCM
$27.3B
| $11.2M | 0.01% |
87,200
-9,600
| -10% | -$1.05M |
|
|
IPFF
781
CALL
DELISTED
iShares International Preferred Stock ETF
IPFF
| $11.1M | 0.01% |
241,200
-44,200
| -15% | -$2.04M |
|
782
CALL
MP Materials
MP
$7.88B
| $11.1M | 0.01% |
193,300
+21,900
| +13% | +$964K |
|
|
SHNY
783
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $11.1M | 0.01% |
720,500
-106,000
| -13% | -$1.63M |
|
784
CALL
Johnson Controls International
JCI
$87.6B
| $11M | 0.01% |
168,500
+41,900
| +33% | +$2.88M |
|
|
FSR
785
CALL
DELISTED
Fisker Inc.
FSR
| $11M | 0.01% |
853,400
+250,600
| +42% | +$3.14M |
|
786
PUT
IQVIA
IQV
$34.3B
| $11M | 0.01% |
47,600
+42,200
| +781% | +$9.99M |
|
787
ASML
ASML
$689B
| $11M | 0.01% |
16,466
-2,015
| -11% | -$1.35M |
|
788
CALL
Sony
SONY
$122B
| $10.9M | 0.01% |
531,500
+119,000
| +29% | +$2.59M |
|
789
PUT
Aptiv
APTV
$11.9B
| $10.9M | 0.01% |
91,000
+25,900
| +40% | +$3.45M |
|
790
PUT
American Electric Power
AEP
$73.3B
| $10.9M | 0.01% |
109,000
+50,700
| +87% | +$4.63M |
|
791
PUT
Magna International
MGA
$17.6B
| $10.9M | 0.01% |
168,800
+166,100
| +6,152% | +$12.3M |
|
|
K
792
PUT
DELISTED
Kellanova
K
| $10.8M | 0.01% |
178,920
+54,954
| +44% | +$3.3M |
|
793
Roku
ROKU
$21B
| $10.8M | 0.01% |
+86,260
| New | +$12.7M |
|
794
PUT
Synopsys
SNPS
$71.4B
| $10.8M | 0.01% |
32,400
+24,000
| +286% | +$7.49M |
|
|
DOCU
795
DocuSign
DOCU
$8.98B
| $10.8M | 0.01% |
100,725
+82,587
| +455% | +$9.48M |
|
796
CALL
Virgin Galactic
SPCE
$335M
| $10.7M | 0.01% |
54,325
+34,135
| +169% | +$6.38M |
|
|
UCD
797
PUT
DELISTED
PROSHARES ULTRA BLOOMBERG COMMODITY
UCD
| $10.7M | 0.01% |
211,000
+6,100
| +3% | +$310K |
|
798
CALL
Sabre
SABR
$676M
| $10.7M | 0.01% |
936,000
+200,500
| +27% | +$1.96M |
|
799
Alibaba
BABA
$271B
| $10.7M | 0.01% |
98,048
+42,863
| +78% | +$4.94M |
|
800
Workday
WDAY
$31.8B
| $10.6M | 0.01% |
44,470
+27,100
| +156% | +$6.46M |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.