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 | |
|---|---|---|---|---|---|---|
8701
AudioEye
AEYE
$72.2M
| $12K | ﹤0.01% |
1,871
+1,550
| +483% | +$9.54K |
|
|
AFMD
8702
PUT
DELISTED
Affimed
AFMD
| $12K | ﹤0.01% |
280
-30
| -10% | -$1.3K |
|
8703
PUT
Allogene Therapeutics
ALLO
$742M
| $12K | ﹤0.01% |
1,400
-600
| -30% | -$6.25K |
|
8704
PUT
Arcos Dorados Holdings
ARCO
$1.68B
| $12K | ﹤0.01% |
+1,500
| New | +$10.3K |
|
8705
CALL
Mission Produce
AVO
$1.15B
| $12K | ﹤0.01% |
1,000
-2,000
| -67% | -$26.6K |
|
8706
Brown-Forman Class A
BF.A
$13B
| $12K | ﹤0.01% |
+200
| New | +$12.4K |
|
|
BKYI
8707
BIO-key International
BKYI
$4.28M
| $12K | ﹤0.01% |
+30
| New | +$12.1K |
|
8708
Bristol-Myers Squibb
BMY
$130B
| $12K | ﹤0.01% |
175
-162,939
| -100% | -$10.9M |
|
8709
CALL
Cullinan Oncology
CGEM
$1.23B
| $12K | ﹤0.01% |
1,200
+1,100
| +1,100% | +$14.9K |
|
8710
PC Connection
CNXN
$2.05B
| $12K | ﹤0.01% |
+248
| New | +$11.7K |
|
8711
PUT
CRH
CRH
$67.5B
| $12K | ﹤0.01% |
300
+100
| +50% | +$4.76K |
|
|
CSGS
8712
CALL
DELISTED
CSG Systems International
CSGS
| $12K | ﹤0.01% |
+200
| New | +$12K |
|
8713
CALL
Caesarstone
CSTE
$99.9M
| $12K | ﹤0.01% |
1,200
-200
| -14% | -$2.37K |
|
|
DAO
8714
PUT
Youdao
DAO
$2.19B
| $12K | ﹤0.01% |
1,700
+700
| +70% | +$7.95K |
|
8715
Donnelley Financial Solutions
DFIN
$1.17B
| $12K | ﹤0.01% |
+373
| New | +$13.3K |
|
8716
PUT
Digi International
DGII
$3.15B
| $12K | ﹤0.01% |
+600
| New | +$12.8K |
|
8717
PUT
Destination XL Group
DXLG
$31.4M
| $12K | ﹤0.01% |
2,600
-23,300
| -90% | -$112K |
|
8718
PUT
e.l.f. Beauty
ELF
$5.57B
| $12K | ﹤0.01% |
500
+200
| +67% | +$5.44K |
|
8719
PUT
Eterna Therapeutics
ERNA
$4.93M
| $12K | ﹤0.01% |
1
| – | – |
|
8720
Fuel Tech
FTEK
$43.4M
| $12K | ﹤0.01% |
8,513
+354
| +4% | +$453 |
|
8721
CALL
Korn Ferry
KFY
$4.3B
| $12K | ﹤0.01% |
200
-300
| -60% | -$20.2K |
|
8722
PUT
Kimco Realty
KIM
$16.1B
| $12K | ﹤0.01% |
500
-4,400
| -90% | -$106K |
|
8723
ProShares UltraShort Bloomberg Natural Gas
KOLD
$100M
| $12K | ﹤0.01% |
378
-3,220
| -89% | -$210K |
|
|
LOAN
8724
PUT
Manhattan Bridge Capital
LOAN
$48.1M
| $12K | ﹤0.01% |
+2,000
| New | +$11.6K |
|
8725
PUT
Comstock
LODE
$265M
| $12K | ﹤0.01% |
750
-370
| -33% | -$5.7K |
|
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 1,602 new positions and adding to 4,440 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 1,602 new positions and closed 1,638 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.