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 | |
|---|---|---|---|---|---|---|
|
HNP
7676
CALL
DELISTED
Huaneng Power Intl, Inc.
HNP
| $33K | ﹤0.01% |
2,000
-7,200
| -78% | -$153K |
|
|
SPI
7677
PUT
DELISTED
SPI Energy Co., Ltd. Ordinary Shares
SPI
| $33K | ﹤0.01% |
11,700
-2,200
| -16% | -$7.04K |
|
7678
PUT
ADMA Biologics
ADMA
$1.96B
| $32K | ﹤0.01% |
17,700
-10,900
| -38% | -$17K |
|
|
AFCG
7679
CALL
AFC Gamma
AFCG
$61.4M
| $32K | ﹤0.01% |
+2,484
| New | +$33.5K |
|
7680
Calix
CALX
$2.26B
| $32K | ﹤0.01% |
756
-27,580
| -97% | -$1.4M |
|
7681
PUT
Cardlytics
CDLX
$21.7M
| $32K | ﹤0.01% |
60
-20
| -25% | -$12.1K |
|
7682
CALL
Compugen
CGEN
$222M
| $32K | ﹤0.01% |
10,200
-13,800
| -58% | -$46.6K |
|
7683
Corvus Pharmaceuticals
CRVS
$1.12B
| $32K | ﹤0.01% |
+20,074
| New | +$36.8K |
|
7684
CALL
Covenant Logistics
CVLG
$894M
| $32K | ﹤0.01% |
3,000
+2,400
| +400% | +$26.9K |
|
7685
CALL
Denali Therapeutics
DNLI
$3.65B
| $32K | ﹤0.01% |
1,000
+700
| +233% | +$24.1K |
|
7686
PUT
Fennec Pharmaceuticals
FENC
$332M
| $32K | ﹤0.01% |
5,800
+3,400
| +142% | +$17.1K |
|
7687
Flux Power
FLUX
$11.2M
| $32K | ﹤0.01% |
12,186
-4,511
| -27% | -$13.7K |
|
|
GP
7688
CALL
GreenPower Motor Co
GP
$10.5M
| $32K | ﹤0.01% |
480
-450
| -48% | -$28.7K |
|
7689
CALL
Integer Holdings
ITGR
$4.12B
| $32K | ﹤0.01% |
400
-3,800
| -90% | -$307K |
|
7690
CALL
IZEA Worldwide
IZEA
$60.6M
| $32K | ﹤0.01% |
4,825
+4,450
| +1,187% | +$20.8K |
|
7691
Lindsay Corp
LNN
$1.13B
| $32K | ﹤0.01% |
+206
| New | +$28.4K |
|
7692
PUT
Seres Therapeutics
MCRB
$46.8M
| $32K | ﹤0.01% |
230
-4,530
| -95% | -$697K |
|
|
MCW
7693
DELISTED
Mister Car Wash
MCW
| $32K | ﹤0.01% |
2,178
+1,831
| +528% | +$30K |
|
7694
CALL
Nuvation Bio
NUVB
$2.2B
| $32K | ﹤0.01% |
6,100
-13,000
| -68% | -$73K |
|
|
RC
7695
Ready Capital
RC
$258M
| $32K | ﹤0.01% |
+2,184
| New | +$32.7K |
|
7696
Invesco S&P 500 Equal Weight Real Estate ETF
RSPR
$106M
| $32K | ﹤0.01% |
807
+200
| +33% | +$7.87K |
|
|
SHOE
7697
CALL
Shoe Station Group
SHOE
$413M
| $32K | ﹤0.01% |
1,100
-1,400
| -56% | -$45.6K |
|
|
SRDX
7698
DELISTED
Surmodics
SRDX
| $32K | ﹤0.01% |
727
-173
| -19% | -$7.57K |
|
|
THR
7699
PUT
DELISTED
Thermon Group Holdings
THR
| $32K | ﹤0.01% |
2,000
+1,800
| +900% | +$31.3K |
|
|
PIXY
7700
CALL
DELISTED
ShiftPixy, Inc. Common Stock
PIXY
| $32K | ﹤0.01% |
+1
| New | +$35.5K |
|
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.