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 |
Amazon
AMZN
|
+$83.1M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$37.2M |
| 3 |
Amgen
AMGN
|
+$30.5M |
| 4 |
Micron Technology
MU
|
+$28.8M |
| 5 |
Qualcomm
QCOM
|
+$18.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$29.5M |
| 2 |
Goldman Sachs
GS
|
+$27.8M |
| 3 |
Gilead Sciences
GILD
|
+$27.6M |
| 4 |
Booking.com
BKNG
|
+$25.4M |
| 5 |
AT&T
T
|
+$19.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 13.55% |
| 2 | Communication Services | 11.57% |
| 3 | Consumer Discretionary | 9.69% |
| 4 | Healthcare | 7.28% |
| 5 | Financials | 4.17% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
FNGN
676
DELISTED
Financial Engines, Inc.
FNGN
| $483K | 0.02% |
+13,198
| New | +$526K |
|
|
SHPG
677
PUT
DELISTED
Shire pic
SHPG
| $483K | 0.02% |
509
+87
| +21% | +$15.2K |
|
678
CALL
RTX Corp
RTX
$262B
| $481K | 0.02% |
1,977
-11
| -0.6% | -$824 |
|
679
CALL
Altria Group
MO
$121B
| $480K | 0.02% |
3,019
+1,053
| +54% | +$77K |
|
680
CALL
ProShares UltraShort Health Care
RXD
$3.38M
| $479K | 0.02% |
1,188
-877
| -42% | -$132K |
|
681
Sociedad Química y Minera de Chile
SQM
$19.8B
| $479K | 0.02% |
14,512
+10,237
| +239% | +$360K |
|
682
SBA Communications
SBAC
$18.9B
| $477K | 0.02% |
+3,539
| New | +$460K |
|
|
TYNS
683
CALL
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $477K | 0.02% |
1,443
-1,107
| -43% | -$31.3K |
|
684
Pitney Bowes
PBI
$2.44B
| $475K | 0.02% |
31,495
-26,040
| -45% | -$380K |
|
|
CSOD
685
DELISTED
Cornerstone OnDemand, Inc.
CSOD
| $475K | 0.02% |
+13,295
| New | +$498K |
|
686
L3Harris
LHX
$53.1B
| $474K | 0.02% |
4,348
+1,293
| +42% | +$142K |
|
687
ScottsMiracle-Gro
SMG
$4B
| $474K | 0.02% |
5,305
-1,290
| -20% | -$116K |
|
688
CALL
Darden Restaurants
DRI
$22.2B
| $473K | 0.02% |
544
+110
| +25% | +$9.61K |
|
689
Huntington Ingalls Industries
HII
$10.9B
| $473K | 0.02% |
2,541
-1,632
| -39% | -$319K |
|
690
Park Hotels & Resorts
PK
$3.03B
| $473K | 0.02% |
17,564
-7,107
| -29% | -$188K |
|
691
Kroger
KR
$35.3B
| $471K | 0.02% |
20,206
-18,219
| -47% | -$517K |
|
692
Cheniere Energy
LNG
$56B
| $471K | 0.02% |
+9,674
| New | +$461K |
|
693
CALL
OraSure Technologies
OSUR
$261M
| $471K | 0.02% |
736
+64
| +10% | +$922 |
|
694
Dillards
DDS
$9.2B
| $470K | 0.02% |
8,153
+7,351
| +917% | +$389K |
|
|
CHU
695
DELISTED
China Unicom (HONG KONG) Limited
CHU
| $470K | 0.02% |
+31,473
| New | +$438K |
|
|
RHT
696
CALL
DELISTED
Red Hat Inc
RHT
| $469K | 0.02% |
666
-286
| -30% | -$25.5K |
|
697
PUT
Berkshire Hathaway Class B
BRK.B
$1.06T
| $468K | 0.02% |
2,390
-204
| -8% | -$33.9K |
|
698
PUT
Ford
F
$57.5B
| $468K | 0.02% |
2,945
+1,170
| +66% | +$13.1K |
|
699
CALL
Snap
SNAP
$7.52B
| $468K | 0.02% |
7,431
+1,245
| +20% | +$25.1K |
|
700
PUT
Cleveland-Cliffs
CLF
$5.39B
| $465K | 0.02% |
1,908
-1,494
| -44% | -$9.89K |
|
Similar funds
Simplex Trading's Q2 2017 Portfolio in Review
As of Q2 2017, Simplex Trading held 7,527 positions worth $2.3B, down 0.39% from $2.31B the previous quarter. Its ten largest holdings account for 23% of the portfolio.
Simplex Trading withdrew a net $114M in Q2 2017, closing 1,474 positions and reducing 2,320 holdings. Its most notable exit was AT&T, an estimated $19.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 14% of assets, up from 9.7% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amgen worth $32.3M.
- Simplex Trading's largest Q2 2017 buy was Amgen: 187,633 shares worth $32.3M.
- Simplex Trading added most to Amazon in Q2 2017, an estimated $83.1M increase.
- Simplex Trading's biggest Q2 2017 reduction was State Street SPDR S&P 500 ETF Trust, cutting an estimated $29.5M.
- Simplex Trading fully exited AT&T in Q2 2017, selling an estimated $19.6M.
- Simplex Trading's ten largest holdings make up 23% of its $2.3B portfolio in Q2 2017.
- Simplex Trading opened 1,408 new positions and closed 1,474 in Q2 2017.
- Simplex Trading's portfolio value fell 0.39% quarter-over-quarter to $2.3B.
Based on Simplex Trading's 13F filing for Q2 2017, filed 12 Jul 2017.