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 | |
|---|---|---|---|---|---|---|
601
CALL
Illumina
ILMN
$28.9B
| $16.9M | 0.02% |
49,652
+14,597
| +42% | +$4.93M |
|
602
CALL
Western Digital
WDC
$192B
| $16.9M | 0.02% |
449,026
+171,196
| +62% | +$7.03M |
|
603
CALL
Eli Lilly
LLY
$1.04T
| $16.8M | 0.02% |
58,800
-51,000
| -46% | -$13.1M |
|
604
PUT
US Bancorp Series B Preferred Stock
USB.PRH
$747M
| $16.7M | 0.02% |
314,800
+77,900
| +33% | +$1.7M |
|
605
PUT
McKesson
MCK
$95.3B
| $16.7M | 0.02% |
54,400
+18,500
| +52% | +$5.03M |
|
606
PUT
Macy's
M
$6.4B
| $16.6M | 0.02% |
683,100
-287,900
| -30% | -$7.38M |
|
607
Mercado Libre
MELI
$91.2B
| $16.6M | 0.02% |
13,953
+4,654
| +50% | +$5.06M |
|
608
CALL
Academy Sports + Outdoors
ASO
$3.03B
| $16.5M | 0.02% |
419,800
+349,900
| +501% | +$12.8M |
|
609
CALL
Toronto Dominion Bank
TD
$200B
| $16.4M | 0.02% |
206,900
+38,000
| +22% | +$3.06M |
|
610
CALL
Trump Media & Technology Group
DJT
$2.56B
| $16.4M | 0.02% |
254,700
+46,500
| +22% | +$3.5M |
|
611
CALL
Li Auto
LI
$12B
| $16.4M | 0.02% |
636,400
+420,600
| +195% | +$11.6M |
|
612
PUT
EQT Corp
EQT
$33.8B
| $16.3M | 0.01% |
474,900
+80,000
| +20% | +$1.95M |
|
613
PUT
Halliburton
HAL
$27.6B
| $16.3M | 0.01% |
431,300
+3,300
| +0.8% | +$107K |
|
614
CALL
First Trust Natural Gas ETF
FCG
$636M
| $16.1M | 0.01% |
128,000
+46,300
| +57% | +$972K |
|
615
PUT
MP Materials
MP
$8.13B
| $16M | 0.01% |
279,400
+214,800
| +333% | +$9.45M |
|
616
CALL
MGM Resorts International
MGM
$11.6B
| $16M | 0.01% |
380,800
-514,800
| -57% | -$22.1M |
|
617
PUT
Prudential Financial
PRU
$41.3B
| $15.9M | 0.01% |
134,500
+2,100
| +2% | +$239K |
|
618
CALL
Lumen
LUMN
$6.9B
| $15.8M | 0.01% |
1,406,100
+409,400
| +41% | +$4.69M |
|
619
PUT
Idexx Laboratories
IDXX
$43B
| $15.8M | 0.01% |
28,900
+24,100
| +502% | +$12.7M |
|
620
CALL
Phillips 66
PSX
$84.8B
| $15.8M | 0.01% |
182,900
+59,800
| +49% | +$5.03M |
|
621
GE Aerospace
GE
$354B
| $15.7M | 0.01% |
276,249
+196,526
| +247% | +$11.7M |
|
622
CALL
Novartis
NVS
$291B
| $15.7M | 0.01% |
179,000
-1,500
| -0.8% | -$130K |
|
|
TYNS
623
CALL
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $15.7M | 0.01% |
133,600
-74,300
| -36% | -$8.72M |
|
624
CALL
EPAM Systems
EPAM
$4.52B
| $15.7M | 0.01% |
52,800
+38,200
| +262% | +$15M |
|
625
PUT
Regeneron Pharmaceuticals
REGN
$68.3B
| $15.6M | 0.01% |
22,300
-23,600
| -51% | -$14.9M |
|
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.