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 | |
|---|---|---|---|---|---|---|
7001
PUT
Tilly's
TLYS
$116M
| $55K | ﹤0.01% |
5,900
| – | – |
|
|
CUTR
7002
CALL
DELISTED
Cutera, Inc.
CUTR
| $55K | ﹤0.01% |
+800
| New | +$32.4K |
|
|
PGRU
7003
PUT
DELISTED
PropertyGuru Group Limited
PGRU
| $55K | ﹤0.01% |
+8,000
| New | +$58.8K |
|
|
QNGY
7004
CALL
DELISTED
Quanergy Systems, Inc.
QNGY
| $55K | ﹤0.01% |
1,515
-1,875
| -55% | -$210K |
|
|
MN
7005
DELISTED
MANNING & NAPIER, INC.
MN
| $55K | ﹤0.01% |
6,130
-1,921
| -24% | -$16.1K |
|
|
HMLP
7006
PUT
DELISTED
HOEGH LNG PARTNERS LP
HMLP
| $55K | ﹤0.01% |
7,500
-3,800
| -34% | -$17.7K |
|
|
CCMP
7007
CALL
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $55K | ﹤0.01% |
300
-300
| -50% | -$55.3K |
|
|
HSKA
7008
CALL
DELISTED
Heska Corp
HSKA
| $55K | ﹤0.01% |
400
+300
| +300% | +$42.4K |
|
7009
Cadiz
CDZI
$251M
| $54K | ﹤0.01% |
26,291
+25,856
| +5,944% | +$65.1K |
|
7010
PUT
Compass Diversified
CODI
$758M
| $54K | ﹤0.01% |
2,300
+1,200
| +109% | +$30K |
|
7011
PUT
Cedar Fair
FUN
$1.77B
| $54K | ﹤0.01% |
1,000
-22,600
| -96% | -$1.21M |
|
7012
CALL
Gates Industrial Corporation Ltd.
GTES
$7.08B
| $54K | ﹤0.01% |
3,600
-16,800
| -82% | -$263K |
|
7013
ICU Medical
ICUI
$4.21B
| $54K | ﹤0.01% |
244
-578
| -70% | -$129K |
|
7014
PUT
Morningstar
MORN
$7.22B
| $54K | ﹤0.01% |
+200
| New | +$56.5K |
|
7015
PUT
NiSource
NI
$21.3B
| $54K | ﹤0.01% |
1,700
-1,200
| -41% | -$34.8K |
|
|
NXRT
7016
CALL
NexPoint Residential Trust
NXRT
$666M
| $54K | ﹤0.01% |
+600
| New | +$50K |
|
7017
PUT
Oxford Industries
OXM
$566M
| $54K | ﹤0.01% |
600
+300
| +100% | +$26.5K |
|
7018
Ranpak Holdings
PACK
$439M
| $54K | ﹤0.01% |
+2,656
| New | +$69.3K |
|
7019
CALL
Puma Biotechnology
PBYI
$404M
| $54K | ﹤0.01% |
18,900
-800
| -4% | -$2.07K |
|
7020
Solid Biosciences
SLDB
$794M
| $54K | ﹤0.01% |
3,029
+2,063
| +214% | +$36.4K |
|
7021
CALL
TFS Financial
TFSL
$5.16B
| $54K | ﹤0.01% |
3,300
-25,000
| -88% | -$430K |
|
7022
PUT
Unisys
UIS
$209M
| $54K | ﹤0.01% |
2,500
-4,000
| -62% | -$81K |
|
7023
CALL
Visteon
VC
$2.79B
| $54K | ﹤0.01% |
500
-200
| -29% | -$21.8K |
|
7024
CALL
Viking Therapeutics
VKTX
$3.7B
| $54K | ﹤0.01% |
18,100
-39,400
| -69% | -$141K |
|
7025
CALL
ReWalk Robotics
LFWD
$20.3M
| $54K | ﹤0.01% |
555
-322
| -37% | -$30.4K |
|
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.