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 | |
|---|---|---|---|---|---|---|
4876
CALL
Purple Innovation
PRPL
$34.5M
| $242K | ﹤0.01% |
1,656
-736
| -31% | -$145K |
|
|
LFC
4877
PUT
DELISTED
China Life Insurance Company Ltd.
LFC
| $242K | ﹤0.01% |
+31,900
| New | +$269K |
|
4878
PUT
Alexandria Real Estate Equities
ARE
$9.37B
| $241K | ﹤0.01% |
1,200
+500
| +71% | +$97.6K |
|
|
CLPR
4879
Clipper Realty
CLPR
$46.4M
| $241K | ﹤0.01% |
26,668
-39,732
| -60% | -$371K |
|
4880
CALL
Commercial Metals
CMC
$7.53B
| $241K | ﹤0.01% |
5,800
-11,100
| -66% | -$417K |
|
4881
eHealth
EHTH
$41.9M
| $241K | ﹤0.01% |
+19,422
| New | +$335K |
|
4882
Hyliion Holdings
HYLN
$578M
| $241K | ﹤0.01% |
54,594
+52,529
| +2,544% | +$232K |
|
4883
PUT
Clearway Energy Class C
CWEN
$4.79B
| $240K | ﹤0.01% |
6,800
-2,000
| -23% | -$68.1K |
|
4884
Innovative Industrial Properties
IIPR
$1.77B
| $240K | ﹤0.01% |
1,171
-6,563
| -85% | -$1.29M |
|
4885
CALL
Smith Micro Software
SMSI
$13.6M
| $240K | ﹤0.01% |
1,595
+1,207
| +311% | +$190K |
|
|
STKL
4886
DELISTED
SunOpta
STKL
| $240K | ﹤0.01% |
47,908
+22,877
| +91% | +$121K |
|
4887
CALL
ABM Industries
ABM
$2.89B
| $239K | ﹤0.01% |
5,200
-1,200
| -19% | -$52.2K |
|
4888
Atara Biotherapeutics
ATRA
$72.6M
| $239K | ﹤0.01% |
1,032
+868
| +529% | +$276K |
|
4889
CALL
8x8 Inc
EGHT
$279M
| $239K | ﹤0.01% |
19,000
+16,900
| +805% | +$234K |
|
4890
CALL
Veeco
VECO
$2.62B
| $239K | ﹤0.01% |
8,800
+6,700
| +319% | +$189K |
|
|
RADI
4891
DELISTED
Radius Global Infrastructure, Inc. Class A Common Stock
RADI
| $239K | ﹤0.01% |
16,756
-79,292
| -83% | -$1.11M |
|
|
APTX
4892
DELISTED
Aptinyx Inc. Common Stock
APTX
| $239K | ﹤0.01% |
+105,717
| New | +$317K |
|
|
MACK
4893
DELISTED
Merrimack Pharmaceuticals, Inc.
MACK
| $239K | ﹤0.01% |
+37,819
| New | +$212K |
|
4894
CALL
Vertical Aerospace
EVTL
$154M
| $238K | ﹤0.01% |
3,420
+1,770
| +107% | +$134K |
|
4895
PUT
Infosys
INFY
$51B
| $238K | ﹤0.01% |
9,600
-39,000
| -80% | -$924K |
|
|
ISPO
4896
PUT
DELISTED
Inspirato
ISPO
| $238K | ﹤0.01% |
+1,200
| New | +$421K |
|
4897
PUT
Resources Connection
RGP
$140M
| $238K | ﹤0.01% |
13,900
-10,800
| -44% | -$186K |
|
4898
PUT
Xcel Energy
XEL
$49.2B
| $238K | ﹤0.01% |
3,300
-32,400
| -91% | -$2.23M |
|
|
EPAY
4899
PUT
DELISTED
Bottomline Technologies Inc
EPAY
| $238K | ﹤0.01% |
4,200
-18,000
| -81% | -$1.02M |
|
|
BHR
4900
Braemar Hotels & Resorts
BHR
$163M
| $237K | ﹤0.01% |
38,384
+25,583
| +200% | +$146K |
|
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.