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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
526
Energizer
ENR
$1.4B
| $676K | 0.03% |
12,140
+4,215
| +53% | +$222K |
|
527
Sherwin-Williams
SHW
$78.9B
| $675K | 0.03% |
6,531
-9,978
| -60% | -$1M |
|
528
CALL
MGM Resorts International
MGM
$11.6B
| $673K | 0.03% |
3,996
+3,323
| +494% | +$92.1K |
|
529
TripAdvisor
TRIP
$1.61B
| $673K | 0.03% |
+15,598
| New | +$740K |
|
|
UNVR
530
DELISTED
Univar Solutions Inc.
UNVR
| $673K | 0.03% |
+21,961
| New | +$660K |
|
531
Roper Technologies
ROP
$34B
| $672K | 0.03% |
+3,255
| New | +$653K |
|
532
PUT
Occidental Petroleum
OXY
$57.2B
| $671K | 0.03% |
1,743
+1,058
| +154% | +$70.4K |
|
533
Broadridge
BR
$16.7B
| $669K | 0.03% |
9,859
+1,392
| +16% | +$94.4K |
|
534
Advanced Energy
AEIS
$12.7B
| $667K | 0.03% |
9,736
+8,252
| +556% | +$510K |
|
535
Expeditors International
EXPD
$23.2B
| $667K | 0.03% |
11,811
+1,980
| +20% | +$109K |
|
536
PUT
UnitedHealth
UNH
$392B
| $667K | 0.03% |
2,836
-1,021
| -26% | -$167K |
|
|
AFSI
537
DELISTED
AmTrust Financial Services, Inc.
AFSI
| $667K | 0.03% |
+36,148
| New | +$881K |
|
538
Designer Brands
DBI
$293M
| $665K | 0.03% |
+32,175
| New | +$668K |
|
539
PUT
iShares Morningstar Value ETF
ILCV
$1.3B
| $662K | 0.03% |
13,092
+9,022
| +222% | +$434K |
|
|
LKSD
540
DELISTED
LSC Communications, Inc.
LKSD
| $662K | 0.03% |
+26,324
| New | +$688K |
|
541
PUT
Adobe
ADBE
$86.8B
| $661K | 0.03% |
2,150
+1,198
| +126% | +$141K |
|
542
PUT
United Airlines
UAL
$38.1B
| $653K | 0.03% |
2,259
+1,186
| +111% | +$85.7K |
|
543
PUT
Blackstone
BX
$150B
| $652K | 0.03% |
4,103
+647
| +19% | +$19.5K |
|
544
PUT
Berkshire Hathaway Class B
BRK.B
$1.06T
| $650K | 0.03% |
2,594
+610
| +31% | +$102K |
|
545
KB Home
KBH
$3.46B
| $650K | 0.03% |
+32,706
| New | +$572K |
|
|
CDK
546
DELISTED
CDK Global, Inc.
CDK
| $647K | 0.03% |
+9,965
| New | +$638K |
|
547
Autodesk
ADSK
$43B
| $645K | 0.03% |
+7,461
| New | +$624K |
|
|
CELG
548
PUT
DELISTED
Celgene Corp
CELG
| $645K | 0.03% |
1,957
+621
| +46% | +$74.3K |
|
549
CALL
Medtronic
MDT
$105B
| $641K | 0.03% |
1,834
-390
| -18% | -$30.5K |
|
550
STMicroelectronics
STM
$58.7B
| $641K | 0.03% |
41,486
+19,571
| +89% | +$273K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.