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 | |
|---|---|---|---|---|---|---|
2701
CALL
Ubiquiti
UI
$31.8B
| $1.19M | ﹤0.01% |
4,100
+2,200
| +116% | +$594K |
|
|
EBIX
2702
PUT
DELISTED
Ebix Inc
EBIX
| $1.19M | ﹤0.01% |
36,000
+8,400
| +30% | +$262K |
|
2703
Cloudflare
NET
$93B
| $1.19M | ﹤0.01% |
+9,952
| New | +$1.04M |
|
2704
PUT
Tecnoglass
TGLS
$2.01B
| $1.19M | ﹤0.01% |
47,200
+28,000
| +146% | +$628K |
|
2705
PUT
Atea Pharmaceuticals
AVIR
$379M
| $1.19M | ﹤0.01% |
164,600
-12,600
| -7% | -$85.6K |
|
2706
CALL
Winnebago Industries
WGO
$870M
| $1.19M | ﹤0.01% |
22,000
+10,700
| +95% | +$691K |
|
2707
Boston Scientific
BSX
$65.8B
| $1.19M | ﹤0.01% |
26,821
+798
| +3% | +$34.6K |
|
2708
PUT
IonQ
IONQ
$12.3B
| $1.19M | ﹤0.01% |
93,100
+31,900
| +52% | +$429K |
|
|
APPH
2709
CALL
DELISTED
AppHarvest, Inc. Common Stock
APPH
| $1.19M | ﹤0.01% |
221,000
+7,000
| +3% | +$29K |
|
2710
PUT
Acadia Pharmaceuticals
ACAD
$4.25B
| $1.19M | ﹤0.01% |
49,000
+15,800
| +48% | +$382K |
|
2711
CALL
RLJ Lodging Trust
RLJ
$1.87B
| $1.19M | ﹤0.01% |
84,300
+83,400
| +9,267% | +$1.17M |
|
2712
CALL
Jacobs Solutions
J
$15.9B
| $1.19M | ﹤0.01% |
10,397
-5,561
| -35% | -$597K |
|
2713
PUT
CMS Energy
CMS
$23.1B
| $1.18M | ﹤0.01% |
16,900
+16,500
| +4,125% | +$1.07M |
|
2714
PUT
Alpha and Omega Semiconductor
AOSL
$923M
| $1.18M | ﹤0.01% |
21,600
+11,600
| +116% | +$603K |
|
|
RC
2715
PUT
Ready Capital
RC
$265M
| $1.18M | ﹤0.01% |
78,300
-4,900
| -6% | -$73.4K |
|
|
BKI
2716
DELISTED
Black Knight, Inc. Common Stock
BKI
| $1.18M | ﹤0.01% |
20,338
+8,130
| +67% | +$536K |
|
|
MAXR
2717
PUT
DELISTED
Maxar Technologies Inc. Common Stock
MAXR
| $1.18M | ﹤0.01% |
29,900
+15,800
| +112% | +$483K |
|
2718
CALL
Hims & Hers Health
HIMS
$6.5B
| $1.18M | ﹤0.01% |
221,200
+86,400
| +64% | +$427K |
|
|
FRGI
2719
PUT
DELISTED
Fiesta Restaurant Group, Inc.
FRGI
| $1.18M | ﹤0.01% |
157,700
+154,800
| +5,338% | +$1.48M |
|
|
AVLR
2720
DELISTED
Avalara, Inc.
AVLR
| $1.18M | ﹤0.01% |
11,848
+4,619
| +64% | +$468K |
|
2721
CALL
Allison Transmission
ALSN
$10.1B
| $1.18M | ﹤0.01% |
30,000
+25,300
| +538% | +$996K |
|
2722
CALL
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
$27B
| $1.18M | ﹤0.01% |
2,400
-5,800
| -71% | -$2.82M |
|
2723
CALL
Sturm, Ruger & Co
RGR
$610M
| $1.18M | ﹤0.01% |
16,900
-4,900
| -22% | -$337K |
|
2724
CALL
Travel + Leisure Co
TNL
$4.54B
| $1.18M | ﹤0.01% |
20,300
+15,500
| +323% | +$874K |
|
2725
CALL
PTC
PTC
$13.7B
| $1.17M | ﹤0.01% |
10,900
-4,900
| -31% | -$551K |
|
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.