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 | |
|---|---|---|---|---|---|---|
6076
PUT
LegalZoom.com
LZ
$1.35B
| $104K | ﹤0.01% |
7,400
-6,800
| -48% | -$102K |
|
|
SCWX
6077
CALL
DELISTED
SecureWorks Corp Class A Common Stock
SCWX
| $104K | ﹤0.01% |
7,900
-400
| -5% | -$5.71K |
|
|
QNGY
6078
DELISTED
Quanergy Systems, Inc.
QNGY
| $104K | ﹤0.01% |
+2,834
| New | +$317K |
|
|
ATRS
6079
DELISTED
Antares Pharma, Inc.
ATRS
| $104K | ﹤0.01% |
25,514
+20,419
| +401% | +$74.1K |
|
|
MACK
6080
PUT
DELISTED
Merrimack Pharmaceuticals, Inc.
MACK
| $104K | ﹤0.01% |
16,500
+14,600
| +768% | +$82K |
|
6081
CALL
Acacia Research
ACTG
$428M
| $103K | ﹤0.01% |
23,000
+11,500
| +100% | +$48.3K |
|
6082
AMC Entertainment Holdings
AMC
$2.52B
| $103K | ﹤0.01% |
420
-11,155
| -96% | -$2.08M |
|
6083
AerSale
ASLE
$293M
| $103K | ﹤0.01% |
6,607
-12,624
| -66% | -$194K |
|
6084
PUT
Alphatec Holdings
ATEC
$1.46B
| $103K | ﹤0.01% |
9,000
+8,000
| +800% | +$86.5K |
|
6085
CALL
Credicorp
BAP
$31.8B
| $103K | ﹤0.01% |
600
-100
| -14% | -$15.1K |
|
6086
CALL
Codexis
CDXS
$151M
| $103K | ﹤0.01% |
5,000
+4,700
| +1,567% | +$97.3K |
|
6087
PUT
China Yuchai International
CYD
$1.77B
| $103K | ﹤0.01% |
8,900
-300
| -3% | -$3.88K |
|
|
NAK
6088
PUT
Northern Dynasty Minerals
NAK
$784M
| $103K | ﹤0.01% |
249,600
-39,600
| -14% | -$14K |
|
6089
CALL
Omnicell
OMCL
$1.61B
| $103K | ﹤0.01% |
800
-800
| -50% | -$115K |
|
|
PDS
6090
CALL
Precision Drilling
PDS
$999M
| $103K | ﹤0.01% |
1,400
+600
| +75% | +$31.8K |
|
6091
Impinj
PI
$4.62B
| $103K | ﹤0.01% |
1,626
-3,411
| -68% | -$246K |
|
6092
Invesco Dorsey Wright Technology Momentum ETF
PTF
$593M
| $103K | ﹤0.01% |
2,247
+1,833
| +443% | +$85K |
|
6093
PUT
PolyPid
PYPD
$82.3M
| $103K | ﹤0.01% |
630
-7
| -1% | -$1.06K |
|
6094
Red Cat Holdings
RCAT
$1.15B
| $103K | ﹤0.01% |
51,381
+47,246
| +1,143% | +$90.9K |
|
6095
CALL
Walker & Dunlop
WD
$1.71B
| $103K | ﹤0.01% |
800
-1,000
| -56% | -$137K |
|
|
THCX
6096
DELISTED
AXS Cannabis ETF
THCX
| $103K | ﹤0.01% |
1,364
+148
| +12% | +$11K |
|
|
AQUA
6097
CALL
DELISTED
Evoqua Water Technologies Corp. Common Stock
AQUA
| $103K | ﹤0.01% |
2,200
-1,300
| -37% | -$55.5K |
|
|
REV
6098
DELISTED
Revlon, Inc.
REV
| $103K | ﹤0.01% |
12,787
+6,540
| +105% | +$62.5K |
|
|
ARBK
6099
CALL
Argo Blockchain
ARBK
$41.9M
| $102K | ﹤0.01% |
48
+31
| +182% | +$65.4K |
|
6100
PUT
Bain Capital Specialty
BCSF
$806M
| $102K | ﹤0.01% |
6,600
-16,300
| -71% | -$257K |
|
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.