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 | |
|---|---|---|---|---|---|---|
8776
CALL
California Water Service
CWT
$3.14B
| $11K | ﹤0.01% |
200
-100
| -33% | -$6.03K |
|
8777
CALL
Dolphin Entertainment
DLPN
$13.8M
| $11K | ﹤0.01% |
1,150
-13,550
| -92% | -$141K |
|
8778
PUT
Emcor
EME
$31.4B
| $11K | ﹤0.01% |
100
| – | – |
|
8779
PUT
Evercore
EVR
$13.2B
| $11K | ﹤0.01% |
100
-1,100
| -92% | -$135K |
|
8780
PUT
CapForce IBD 50 ETF
FFTY
$80.2M
| $11K | ﹤0.01% |
+300
| New | +$11.6K |
|
8781
CALL
Forrester Research
FORR
$200M
| $11K | ﹤0.01% |
+200
| New | +$10.8K |
|
8782
PUT
Gildan
GIL
$9.58B
| $11K | ﹤0.01% |
300
-1,900
| -86% | -$74.5K |
|
8783
PUT
Hooker Furnishings Corp
HOFT
$150M
| $11K | ﹤0.01% |
600
-600
| -50% | -$12.8K |
|
8784
PUT
Immunocore
IMCR
$1.7B
| $11K | ﹤0.01% |
+400
| New | +$10.1K |
|
8785
CALL
KULR Technology Group
KULR
$117M
| $11K | ﹤0.01% |
675
-263
| -28% | -$4.88K |
|
8786
Mativ Holdings
MATV
$482M
| $11K | ﹤0.01% |
+433
| New | +$13K |
|
8787
PUT
Mercury Insurance
MCY
$6.07B
| $11K | ﹤0.01% |
200
-9,300
| -98% | -$501K |
|
8788
PUT
Mercer International
MERC
$45.6M
| $11K | ﹤0.01% |
800
-3,600
| -82% | -$46.4K |
|
8789
MacroGenics
MGNX
$245M
| $11K | ﹤0.01% |
+1,362
| New | +$15K |
|
8790
CALL
Milestone Scientific
MLSS
$38M
| $11K | ﹤0.01% |
7,500
+2,900
| +63% | +$4.23K |
|
8791
PUT
Martin Midstream Partners
MMLP
$93.1M
| $11K | ﹤0.01% |
2,800
-2,100
| -43% | -$7.11K |
|
|
MODV
8792
CALL
DELISTED
ModivCare
MODV
| $11K | ﹤0.01% |
100
| – | – |
|
8793
PUT
NextDecade
NEXT
$1.63B
| $11K | ﹤0.01% |
+1,700
| New | +$5.33K |
|
8794
PUT
Oil States International
OIS
$483M
| $11K | ﹤0.01% |
1,600
+1,100
| +220% | +$6.97K |
|
|
PPTA
8795
CALL
Perpetua Resources
PPTA
$2.18B
| $11K | ﹤0.01% |
2,800
-1,600
| -36% | -$6.4K |
|
8796
PUT
CarParts.com
PRTS
$42.4M
| $11K | ﹤0.01% |
170
-310
| -65% | -$26.7K |
|
8797
CALL
Quanterix
QTRX
$164M
| $11K | ﹤0.01% |
400
-7,900
| -95% | -$241K |
|
8798
CALL
RB Global
RBA
$21.7B
| $11K | ﹤0.01% |
+200
| New | +$11.7K |
|
8799
CALL
SITE Centers
SITC
$235M
| $11K | ﹤0.01% |
897
+128
| +17% | +$1.56K |
|
8800
CALL
Simply Good Foods
SMPL
$941M
| $11K | ﹤0.01% |
300
-1,800
| -86% | -$67.2K |
|
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.