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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
XLNX
476
CALL
DELISTED
Xilinx Inc
XLNX
| $8.45M | 0.01% |
1,084
-3,772
| -78% | -$329K |
|
477
CALL
Cognizant
CTSH
$20.4B
| $8.43M | 0.01% |
1,815
+1,115
| +159% | +$66.4K |
|
478
Bank of America
BAC
$432B
| $8.4M | 0.01% |
395,705
+187,355
| +90% | +$5.62M |
|
479
CALL
Elevance Health
ELV
$84.4B
| $8.4M | 0.01% |
370
-763
| -67% | -$208K |
|
480
PUT
RH
RH
$3.31B
| $8.4M | 0.01% |
836
-1,141
| -58% | -$213K |
|
481
PUT
Pinterest
PINS
$12.6B
| $8.35M | 0.01% |
5,406
+2,608
| +93% | +$50.8K |
|
482
CALL
RingCentral
RNG
$3.16B
| $8.24M | 0.01% |
389
+195
| +101% | +$40.2K |
|
483
PUT
American Tower
AMT
$77.4B
| $8.16M | 0.01% |
375
-723
| -66% | -$168K |
|
484
PUT
Zillow
Z
$7.18B
| $8.13M | 0.01% |
2,267
+1,893
| +506% | +$87.4K |
|
485
PUT
United States Natural Gas Fund
UNG
$472M
| $8.11M | 0.01% |
1,616
+150
| +10% | +$8.71K |
|
486
CALL
Cummins
CMI
$91.2B
| $8.11M | 0.01% |
599
-278
| -32% | -$43.3K |
|
487
CALL
Paycom
PAYC
$6.5B
| $8.1M | 0.01% |
401
+94
| +31% | +$25.8K |
|
488
CALL
TSMC
TSM
$2.18T
| $8.07M | 0.01% |
1,689
+466
| +38% | +$25.5K |
|
489
PUT
CSX Corp
CSX
$92.8B
| $8.04M | 0.01% |
4,212
-2,886
| -41% | -$67.4K |
|
490
PUT
Virgin Galactic
SPCE
$343M
| $8.01M | 0.01% |
271
+252
| +1,326% | +$95.8K |
|
491
PUT
Altria Group
MO
$121B
| $8M | 0.01% |
2,069
-2,647
| -56% | -$117K |
|
492
PUT
Five Below
FIVE
$11.3B
| $8M | 0.01% |
1,136
+501
| +79% | +$51K |
|
493
PUT
NovoCure
NVCR
$1.8B
| $7.93M | 0.01% |
1,178
+430
| +57% | +$34K |
|
494
iShares Russell 1000 Value ETF
IWD
$81.7B
| $7.93M | 0.01% |
79,949
+75,348
| +1,638% | +$9.39M |
|
495
PUT
Illinois Tool Works
ITW
$78.8B
| $7.92M | 0.01% |
557
-416
| -43% | -$70.7K |
|
|
KFYP
496
CALL
DELISTED
KraneShares CICC China Leaders 100 Index ETF
KFYP
| $7.88M | 0.01% |
1,853
+669
| +57% | +$17.8K |
|
497
CALL
Marriott International
MAR
$97.5B
| $7.88M | 0.01% |
1,054
+870
| +473% | +$108K |
|
498
PUT
Bilibili
BILI
$7.4B
| $7.88M | 0.01% |
3,364
+2,455
| +270% | +$59.3K |
|
|
CERN
499
CALL
DELISTED
Cerner Corp
CERN
| $7.85M | 0.01% |
1,246
+840
| +207% | +$59.7K |
|
500
PUT
Intercontinental Exchange
ICE
$80.6B
| $7.77M | 0.01% |
962
+635
| +194% | +$57.5K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.