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 | |
|---|---|---|---|---|---|---|
2526
CALL
Rambus
RMBS
$10.4B
| $527K | ﹤0.01% |
475
+148
| +45% | +$2.05K |
|
|
LTHM
2527
CALL
DELISTED
Livent Corporation
LTHM
| $526K | ﹤0.01% |
1,002
+848
| +551% | +$7.14K |
|
|
FOE
2528
CALL
DELISTED
Ferro Corporation
FOE
| $526K | ﹤0.01% |
562
+15
| +3% | +$191 |
|
2529
CALL
Autohome
ATHM
$2.43B
| $525K | ﹤0.01% |
74
+35
| +90% | +$2.76K |
|
2530
Scotiabank
BNS
$106B
| $525K | ﹤0.01% |
+12,942
| New | +$654K |
|
2531
Consolidated Edison
ED
$41.6B
| $524K | ﹤0.01% |
+6,728
| New | +$590K |
|
2532
Henry Schein
HSIC
$9.74B
| $524K | ﹤0.01% |
+10,376
| New | +$658K |
|
2533
Sabre
SABR
$656M
| $524K | ﹤0.01% |
+88,373
| New | +$1.48M |
|
2534
CALL
Maximus
MMS
$3.14B
| $523K | ﹤0.01% |
90
+51
| +131% | +$3.46K |
|
2535
Roper Technologies
ROP
$36.3B
| $523K | ﹤0.01% |
+1,680
| New | +$595K |
|
2536
Frontline
FRO
$8.75B
| $522K | ﹤0.01% |
54,323
+10,124
| +23% | +$94.3K |
|
|
LNW
2537
PUT
DELISTED
Light & Wonder
LNW
| $522K | ﹤0.01% |
539
+244
| +83% | +$4.99K |
|
|
LM
2538
DELISTED
Legg Mason, Inc.
LM
| $522K | ﹤0.01% |
10,689
+2,689
| +34% | +$117K |
|
2539
Lloyds Banking Group
LYG
$87.4B
| $521K | ﹤0.01% |
+345,575
| New | +$891K |
|
2540
CALL
Stepan Co
SCL
$1.31B
| $521K | ﹤0.01% |
59
-1
| -2% | -$95 |
|
|
COHR
2541
CALL
DELISTED
Coherent Inc
COHR
| $521K | ﹤0.01% |
49
-72
| -60% | -$10.1K |
|
2542
CALL
America Movil
AMX
$78.1B
| $520K | ﹤0.01% |
442
+186
| +73% | +$2.9K |
|
2543
CALL
Cardlytics
CDLX
$21M
| $520K | ﹤0.01% |
15
+14
| +1,400% | +$9.92K |
|
2544
CALL
Cognex
CGNX
$10.3B
| $519K | ﹤0.01% |
123
-223
| -64% | -$11.2K |
|
2545
PUT
Asure Software
ASUR
$220M
| $518K | ﹤0.01% |
870
+515
| +145% | +$4K |
|
2546
CALL
Ryder
R
$10.3B
| $518K | ﹤0.01% |
196
-51
| -21% | -$2.15K |
|
2547
PUT
Tanger
SKT
$4.82B
| $516K | ﹤0.01% |
1,032
+100
| +11% | +$1.22K |
|
|
TEN
2548
Tsakos Energy Navigation Ltd
TEN
$1.19B
| $515K | ﹤0.01% |
31,620
+26,396
| +505% | +$404K |
|
|
MNTV
2549
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $515K | ﹤0.01% |
38,148
+19,860
| +109% | +$341K |
|
2550
PUT
Alkermes
ALKS
$8.82B
| $514K | ﹤0.01% |
357
+343
| +2,450% | +$6.12K |
|
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.